Anatomy and Physiology You will learn: The Building Blocks of the Human Body and The Basic Body...
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Transcript of Anatomy and Physiology You will learn: The Building Blocks of the Human Body and The Basic Body...
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Anatomy and Physiology
You will learn:
The Building Blocks of the Human Body
and
The Basic Body Systems
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Building Blocks of the Human Body
• Anatomy– The study of organs and systems of the body. – Primary interest to cosmetologist are muscles,
nerves, circulatory system and bones of the head, face, neck, arms and hands.
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Physiology• The study of the FUNCTIONS organs and
systems perform.• What is it and what does it do?
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Tissues
• Made up of groups of cells of the same kind.– There are 4 Primary
types of tissue in the human body.
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• Epithelial Tissue – Covers and protects the body surface and organs (skin).
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• Connective Tissue – Supports, protects and holds the body together.
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• Nerve Tissue – Carries messages to and from the brain, coordinates body functions.
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• Muscular Tissue – Contracts to produce motion.
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Organs And Their Functions
Organs – Separate body structures that perform specific functions. They are composed of two or more different tissues.
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Brain
• Controls all body functions.
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Eyes• Controls
Vision
Heart
•Circulates Blood
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Lungs• Supply blood
with oxygen.
Stomach/Intestine
•Digest food
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Liver• Removes toxic
by-products of
digestion.
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Kidney• Eliminates water
and waste products.
Skin
•Largest organ, external protective layer of the body.
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Body Systems Vital Functions• System – group of structures/organs that
perform one or more vital function of the body.• It is necessary for the professional cosmetologist
to identify the functions of the eight major body systems in order to utilize proper massage, styling and other cosmetology services.
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The Skeletal System• The physical foundation of the body.
– Composed of 206 bones of different shapes and sizes, each attached to others at moveable or immovable joints.
• Accounts for 14% of the body’s total weight.
– Osteology – The study of bones
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Types of Bones• Long bones are found in the arms and
legs.
• Flat bones are found in the skull.
• Irregular bones are found in the wrist, ankle and spinal column.
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Bones• Is the hardest structure in the
body.
• Composition – 2/3 mineral, 1/3 organic matter
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Four Major Functions of the Skeletal System
Movement
Attach muscles
Protect organs
Support and shape the body
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Skull• Skull - Skeleton of the head. Encloses and
protects brain and primary sensory organs.– 2 groups:
• CRANIUM – 8 bones• FACIAL SKELETON – 14 bones
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Major Parts of the CraniumCranium – 6 of 8 bones affected by scalp massage.
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Frontal• Frontal - From eyes to top of head- forehead.
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Parietal• Parietal - 2 bones – form crown
and upper sides of head.
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Occipital• Occipital - Forms back of skull –
indent above nape area.
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Temporal• Temporal - 2 bones – sides of
head above ears, below parietal.
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Sphenoid• Sphenoid - Behind eyes and nose
– connects all bones to cranium. No part in massage or styling.
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Ethnoid• Ethniod - Spongy bone between
eyes – forms part of nasal cavity. No part in massage styling.
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Knowing the parts of the skull can help you to become a super hairstylist!
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Stylist use the occipital area to help create more shape or definition to a
hair cut or style.Graduation mostly in
the occipital area
Haircut fades from
occipital to neckline
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Stylist is shaping the occipital area first.
This is the starting point of most haircuts.
The stylist has finished the occipital
area.
The next step would be to move on to the
parietal area.
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Parietal Bone
Occipital Bone
Frontal Bone
Temporal Bone
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A stylist can determine the length of the fringe area (bangs) based on
the height of the frontal bone.
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The parietal areas can be used to determine where to change
projection angles while cutting hair.
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Have you ever had a massage or a shampoo where the stylist took the time to
give you a scalp massage?
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Facial Skeleton• Of the 14 facial bones, only 9 are involved
in facial massage.– Mandible– Maxillae– Nasal– Zygomatic (Malar)– Lacrimal
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Mandible• Madible - Lower jaw – LARGEST of facial
skeleton
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Maxillae• 2 bones – upper jaw
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Nasal• 2 bones – bridge of nose
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Zygomatic (Malar)
• 2 bones – upper cheek, bottom of eye sockets
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Lacrimal• 2 bones –
smallest of facial skeleton. Front part of inner, bottom wall of eye socket.
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Neck Bones• Neck Bones - Top part of spinal
column and Adam’s apple.
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Cervical Vertebrae• Cervical Vertibrae - 7 bones – often
manipulated in extended scalp massage.
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Hyoid• U-shaped, adam’s
apple
– Serves as a base of attachment for the tongue.
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Arm, Wrist and Hand BonesThe human hand has 27 bones!
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Humerus• Largest bone of upper arm – elbow to
shoulder.
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Radius
• Small bone on the thumb side of lower arm in forearm.
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Ulna• Bone located
on the little finger side of lower arm.
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Carpals• Eight small bones
held together by ligaments to form the wrist (carpus).– Carpal Tunnel -
Improper manipulation of tools or extension of the wrist can lead to a build up of calcium that presses against the carpal nerves to cause pain and less mobility.
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Metacarpals• 5 long thin bones – form palm of
hand.
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Phalanges• 14 bones that form
digits or fingers. Fingers have 3, thumb has 2.– The human thumb
has two separate flexor muscles that move the thumb in opposition and make grasping possible.
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What We Just ReadHead to Head
Challenge
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Dem Bones• Turn to the next
page in your notes packet and complete the “Dem Bones” worksheet. – Use your notes as
reference. – You may also get a
text packet if you need it.
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The Muscular System• Myology - The study of muscles.
• More than 500 muscles – make up 40% of body’s weight.
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Four Major Functions of the Muscular System
1. Support Skeleton
2. Production of body movements
3. Contouring of the body
4. Involved in functions of other body systems (digestive, circulatory and nervous)
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Two Types of Muscle Tissue
• Striated– Voluntary (skeletal) – respond
to commands regulated by will.
• Over 400 – make up the largest category of muscles.
• Non-Striated– Involutary (smooth) - Respond
automatically to control body functions including those of internal organs.
• Responsible for internal operations.
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Straited Muscular Actions
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Non-Striated Muscular Movements
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Special Terminology• The following terms will be used to
describe what a muscle does or where it is located.– Anterior – In front of– Posterior – Behind or in back– Superioris – Located above or is larger– Inferioris – Located below or is smaller– Levator – Lifts up– Depressor – Draws down or depresses– Dialator – Opens, enlarges or expands
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Cosmetologist’s Primary Concern
• Cosmetologist’s are concerned with VOLUNTARY muscles of head, face, neck, arms and hands.
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Three Parts of the Muscle
1. Origin: Non-moving fixed portion, attached to bones or other fixed muscle; means attached to bone.
2. Belly: Midsection of muscle
3. Insertion: Portion of muscle joined to moveable attachments (bone, movable muscles or skin).
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How the Muscle Produces Movement
• Muscles pull but do not push.
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7 Ways To Stimulate Muscles• Massage• Chemicals – certain acids
and salts• Nerve Impulses• Moist Heat – steamers,
steam towels• Electric Current – high
frequency and faradic• Light Rays – IR and UV• Heat Rays – Heat lamps
and heating caps
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Scalp and Face Muscles• Primary interest to the cosmetologist’s as
you perform scalp and neck massages and/or facials.
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Scalp (Epicranius)• Epicranius - Covers epicranium, formed by 2
muscles joined by APONEUROSIS tendon. • Also called occipitofrontalis.
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Frontalis• Frontalis - Front
part of epicranius – forehead to top of skull – raises eyebrows or draws scalp forward.– The frontalis
muscle is right over the frontal bone.
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Occipitalis• Occipitalis - At nape
of neck – draws scalp back.– The occipitalis muscle
is right over the occipital bone.
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Eye and Nose Muscles
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CorrugatorLocated between the eyebrows. Draws eyebrows inward and downward; causes
frown lines.
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Levator Palpebrae Superioris• Located above the eyelids and raises the
eyelids. – Levator means to lift up.
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Orbicularis OculiCircles the eye socket and closes the
lid.
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Procerus• Located between the eyebrows, across
the bridge of the nose. • Draws brows down, wrinkles the area
across the bridge of the nose.
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Mouth Muscles
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Oris Orbicularis• Circles the mouth.
– Function: Contracting, puckering and wrinkling of the lips, kissing or whistling.
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Quadratus Labii Superioris• Consists of 3 parts.
– Located above the upper lip
– Function: raises both the nostrils and upper lip, as in expressing distaste.
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Quadratus Labii Inferioris• Located below the lower lip.
– Function: pulls the lower lip down, as is sarcasm.
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Mentalis• Located at the tip of the chin.
– Function: Pushes the lower lip up and/or wrinkles the chin, as in expressing doubt.
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Risorius• Located at the corner of mouth.
– Function: draws the mouth up and out, as in grinning.
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Caninus• Located above the corners of the mouth.
– Function: raises the angle of the mouth, as in snarling.
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Triangularis• Located below the corners of mouth.
– Function: draws the corners of the mouth down, as in depression.
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Zygomaticus• Located outside the corners of the mouth.
– Function: draws the mouth up and back, as in laughing.
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Buccinator• Located between the jaws and the cheek.
– Function: compresses the cheek, as in blowing.
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Mastication Muscles(Chewing)
• Temporalis– Above and in front of ear. – Function: opens and closes the jaw, as in chewing.
• Masseter– Covers the hinge of the jaw.– Function: closes the jaw, as in chewing.
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Hand Muscles
• Hand muscles stretch over the fingers, connect the joints, provide dexterity.
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Abductor
• Separates the fingers (think of abduct or take away)
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Adductor• Draws the fingers together (think of add).
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Opponens• Located in the palm – cause the thumb to
move toward the fingers – gives the ability to grasp or make a fist.
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The Circulatory System
Also called the vascular system – transports blood
and lymph. Massage treatments
stimulate or relax circulation.
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Cardiovascular System
• Responsible for circulation of blood using arteries, veins and capillaries.
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Lymph-Vascular System• Reaches parts of body
not reached by blood.• Circulates lymph
through lymph glands, nodes and vessels.
• Circulates only as a result of muscle movement; there is no heart-like pump.
• Lymph filters blood by removing toxins (poisons).
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The Heart
• Cone-shaped• Size of closed fist• Located in chest
cavity.• Only muscle of its
kind; involuntary
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One square inch of skin contains up to 15 feet of
blood vessels.
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Arteries
• Tubular, thick walled
• Branching vessels
• Carry pure blood
• Bright red in color
• Carry blood away from heart
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Veins• Thin walled • Branching vessels • Carry blood from
capillaries back to heart.
• Cup-like valves prevent back-flow
• Impure blood is dark red
• Closer to body surface than arteries
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Capillaries• Small vessels
• Take nutrients to cells
• Take waste from cells to veins
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The Nervous System
• Neurology – study of the nervous system.
• 3 parts: Central, Peripheral, Autonomic or sympathetic.
• Primary components: Brain, spinal cord, nerves.
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Peripheral Nervous System• Composed of sensory
and motor nerves that extend from the brain and spinal cord to other parts of the body; carries messages to and from the central nervous system.
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Types of Nerves• Motor
– Carry messages from brain to muscles
• Sensory – Carry messages to brain and
spinal cord– Sense of smell, sight, touch,
hearing, taste
• Mixed– Perform both motor and
sensory functions
Motor Nerves
Sensory Nerves
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Face, Head and Neck Nerves• 2 of the 12 pairs of cranial nerves control face,
head and neck: Trifacial (trigeminal) and facial.– Trifacial is also called the 5th cranial nerve.– Facial is also called the 7th cranial nerve.
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Trifacial and Facial Nerves
• Trifacial is largest of cranial nerves– Divides into 3
main branches and 8 smaller branches.
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Autonomic Nervous System• Also called the
sympathetic nervous system.
• The autonomic system is responsible for all involuntary body functions: Respiratory, Digestive, Excretory, Endocrine, and Reproductive.
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Digestive System• The digestive system
breaks down FOOD into simpler CHEMICAL compounds that can be easily ABSORBED by cells or, if not absorbed, eliminated from the body in WASTE products.
Digestive ProcessPharynx esophagus stomach small intestine large intestine
Takes approx. 9 hours!
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Excretory System• The excretory
system ELIMINATES solid, liquid and gaseous waste products from the body.
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Body’s largest organ
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LiverNeutralizes ammonia and converts it to
urea.
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KidneysReceive urea
from liver; nephrons filter out waste and
water.
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Respiratory System• Primary functions
– Intake oxygen– Exhale carbon
dioxide– Primary organs are
lungs and diaphragm– Breathing through
the nose is the healthier option
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Endocrine System• Glands that
manufacture hormones
• Affects hair growth, skin conditions and energy levels.
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Integumentary SystemTwo Primary Glands
• Sebaceous glands (Oil glands)
• Sudoriferous glands (Sweat glands)
Sebaceous Gland
Sudoriferous Gland
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