The Human Musculoskeletal System

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How do you move? Do you knowwhat body parts underneath your skin help you to move?

TSYS

ME

Organ systemthat gives humans the ability to move using theirmuscularandskeletal systems

The Musculoskeletal System

Skeletal

The bones are what gives the body shape.Bones support our bodies.Babies have more than 300 bones and adults have 206 bones.

Types of BonesUnderneath your skin there are 5 types of bones in the human body. These are. . . Long BonesShort BonesFlat BonesIrregular BonesSesamoid Bones

Long Bones

Includes having a body which is longer than it is wide.They are usually somewhat curved for strength.The femur - a long bone

Tibia

FibulaExamples include femur, tibia, fibula, humerus, ulna and radiusShort Bones

The carpals - a short boneRoughly cube-shaped and have approximately equal length and widthProviding support and stability with little movement.Examples include ankle and wrist bones

Flat Bones

The scapula - a flat bonea thin shape/structure and provide considerable mechanical protection and extensive surfaces for muscle attachments.

Irregular Bones

Vertebrae - irregular bonesBones in the body which do not fall into any other category, due to their non-uniform shape. Consist of cancellous bone, with a thin outer layer of compact bone.Good examples of these are the Vertebrae, Sacrum and Mandible (lower jaw). Sesamoid Bones

The patella (knee cap) a sesamoid boneShort or irregular bones, imbedded in a tendon.It passes over a joint which serves to protect the tendon.

Examples common to everyone include the patellae (kneecaps).

What do you think we would look like without bones?

Bones provide the framework for the body.Bones protect the body organs.Bone helps the body move in different directions and different ways

What is your bone made of?

A typical bone has an outer layer of hard or compact bone, which is very strong, dense and tough!

Inside this is a layer of spongy bone, which is likehoneycomb, lighter and slightly flexible.In the middle of some bones is jelly-likebone marrow, where new cells are being produced for the blood.Muscular

Musclesare also necessary for movement: They're the masses of tough, elastic tissue that pull our bones when we move.

Did you know you have more than 600 muscles in your body?

You control some of your muscles, while others like your heart do their jobs without you thinking about them at all.

Smooth CardiacSkeletal TYPEs

SmoothMuscle Involved in involuntary motion, for example the smooth muscle of the eyes helps them focus without the prompt of the nervous system. No striations and has cells that are described as spindle shaped.

Examples include stomach and bladder

CardiacMuscle Makes up the thick, inner layer of the heart.Enables the heart muscle to pump continuously and involuntarily without ever resting. Promotes the circulation necessary to sustain theentirebody.

SkeletalMuscle Called striated muscleis part of what comprises the musculoskeletal system, which connects muscles and bones for voluntary body movements.Attached to both ends of a bone by the tendons.

Joints, ligaments and tendons

The ones between the carpals of the wrist, are found where bones meet as flat surfacesAllow for the bones to glide past one another in any direction.

Joints

Did you know what are the types of joints and largest joint in the body?

Are where two or more bones meet; They allow you to move.You have joints at your knees andyour shoulders. Try to move these joints.

Such as the one between the first metacarpal and trapezium bone, permit 360 degree motion by allowing the bones to pivot along two axes.

Such as the elbow and knee, limit movement in only one direction so that the angle between bones can increase or decrease at the joint.

Form the only ball and socket joints in the body. Have the freest range of motion of any joint in the body they are the only joints that can move in a full circle and rotate around their axis.

Ligaments

TendonsFibrous connective tissue which attaches muscle to bone.Fibrous connective tissue which attaches bone to boneServes to hold structures together and keep them stable.Attach muscles to structures such as the eyeball. Serves to move the bone or structure