Anatomy, Physiology and Disease Chapter 2 The Human Body: Reading the Map.
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Transcript of Anatomy, Physiology and Disease Chapter 2 The Human Body: Reading the Map.
Anatomy, Physiology and DiseaseAnatomy, Physiology and Disease
Chapter 2Chapter 2
The Human Body:The Human Body:
Reading the MapReading the Map
““I Have Pain in my Stomach”I Have Pain in my Stomach”What exactly does the patient mean?What exactly does the patient mean?
Exactly Exactly wherewhere is the pain? is the pain? Does it Does it movemove or or traveltravel to other parts of the body? to other parts of the body? WhenWhen did it start? did it start? What is the What is the intensityintensity? on a ? on a 1-101-10 scale… scale… Is it Is it sharpsharp, , dulldull, , achyachy, or , or crampingcramping…?…? Does the patient really mean abdomen for stomach?Does the patient really mean abdomen for stomach? Questions about type of pain, exact location, and Questions about type of pain, exact location, and
intensity of pain can help determine intensity of pain can help determine etiologyetiology
Food Menstrual LaborAppendicitis
Trauma I don’t know!
The Anatomical PositionThe Anatomical Position
The person is standing erect, face forward, with The person is standing erect, face forward, with feet parallel, arms hanging at sides, and palms feet parallel, arms hanging at sides, and palms facing forwardfacing forward
Other Body PositionsOther Body Positions
Supine positionSupine position: laying face upward, on your back: laying face upward, on your back Prone positionProne position: laying face downward, on your : laying face downward, on your
stomachstomach Fowler’s positionFowler’s position: sitting in bed with head of bed : sitting in bed with head of bed
elevated 45–60 degreeselevated 45–60 degrees
Trendelenberg
Prone
Supine
Fowler’s
Trendelenburg
Prone
Supine
Fowler’s
Pathology ConnectionPathology Connection
TrendelenburgTrendelenburg
- helps to drain secretions from base of lungs- helps to drain secretions from base of lungs
- - avoidavoid with brain injury patients as it will with brain injury patients as it will
increase intracranial pressure.increase intracranial pressure.
- are at increased risk for - are at increased risk for aspiratingaspirating vomitus, vomitus,
and should not eat within and should not eat within 2-42-4 hours of being hours of being
placed in position.placed in position.
- Patients with - Patients with orthopneaorthopnea have difficult time have difficult time
breathing if they lie flat.breathing if they lie flat.
Pathology Connection Pathology Connection con’tcon’t
JVD: Jugular Vein DistentionJVD: Jugular Vein Distention
- distend neck veins due to heart failure- distend neck veins due to heart failure
Pathology Connection Pathology Connection con’tcon’t
Orthostatic HypotensionOrthostatic Hypotension
- Dizziness when changing from seated to- Dizziness when changing from seated to
standing positionstanding position..
Body Planes and Directional TermsBody Planes and Directional Terms
PlanePlane - an imaginary line drawn through body or organ- an imaginary line drawn through body or organ to separate into specific sections.to separate into specific sections. Transverse or horizontal planeTransverse or horizontal plane - divides body into - divides body into superiorsuperior (top) and (top) and inferiorinferior (bottom) sections, also referred to as (bottom) sections, also referred to as cross-sectioning the body.cross-sectioning the body. Superior Superior (cranial or cephalic) means (cranial or cephalic) means toward toward head or head or
upper body.upper body. InferiorInferior (caudal) means (caudal) means awayaway from head or toward from head or toward
lower part of body.lower part of body.
Transverse or Horizontal PlaneTransverse or Horizontal Plane
Superior
view
Median or Midsagittal PlaneMedian or Midsagittal Plane
Divides body into right and left halvesDivides body into right and left halves Medial Medial refers to body parts located near refers to body parts located near
middlemiddle or midline of body. or midline of body. LateralLateral refers to body parts located refers to body parts located awayaway from from
midline.midline.
Sagittal view
Sagittal view
Frontal or Coronal PlaneFrontal or Coronal Plane
Divides body into front and back sectionsDivides body into front and back sections AnteriorAnterior or or ventralventral refers to body parts towards refers to body parts towards
or on front of bodyor on front of body PosteriorPosterior or or dorsaldorsal refers to body parts towards refers to body parts towards
or on back of bodyor on back of body
Frontal
View
Proximal and DistalProximal and Distal
ProximalProximal
- refers to body parts - refers to body parts closeclose to to point of reference point of reference
of body.of body. Distal Distal
- refers to body parts - refers to body parts away away
from from point of referencepoint of reference..
External and InternalExternal and Internal
ExternalExternal means on the means on the outsideoutside Skin is located externally and is body’s largest Skin is located externally and is body’s largest
organorgan InternalInternal means on the means on the insideinside
Most organs located internallyMost organs located internally
Additional Directional TermsAdditional Directional Terms
SuperficialSuperficial means means towardtoward or at body surface or at body surface Deep Deep means means away away from body surfacefrom body surface CentralCentral refers to locations around refers to locations around centercenter of body of body PeripheralPeripheral refers to refers to extremitiesextremities or or outerouter region region
Body Location TermsBody Location Terms
Body CavitiesBody Cavities
Body has Body has twotwo large open spaces called cavities large open spaces called cavities that house and protect organsthat house and protect organs
DorsalDorsal ( (posteriorposterior) cavity located on ) cavity located on backback of body of body VentralVentral ( (anterioranterior) Larger cavity located on front of ) Larger cavity located on front of
body is divided into body is divided into twotwo smaller cavities smaller cavities Thoracic cavityThoracic cavity Abdominopelvic cavityAbdominopelvic cavity: further divided into : further divided into
abdominalabdominal and and pelvicpelvic cavities cavities These two smaller cavities are divided by the These two smaller cavities are divided by the
diaphragmdiaphragm
Main Body CavitiesMain Body Cavities
Main Body CavitiesMain Body Cavities
Thoracic CavityThoracic Cavity
ContainsContains HeartHeart LungsLungs Large blood vesselsLarge blood vessels
Abdominal CavityAbdominal Cavity
Contains digestive organsContains digestive organs StomachStomach IntestinesIntestines LiverLiver GallbladderGallbladder PancreasPancreas SpleenSpleen
Pelvic CavityPelvic Cavity
Lower portion ofLower portion of abdominopelvic abdominopelvic cavity contains cavity contains Urinary organsUrinary organs Reproductive organsReproductive organs Large part of large intestineLarge part of large intestine
Dorsal CavityDorsal Cavity
Located in back of body and consists of Located in back of body and consists of two two cavitiescavities Cranial cavityCranial cavity houses brain houses brain Spinal cavitySpinal cavity contains spinal column contains spinal column
Review of Body CavitiesReview of Body Cavities
Review of Body CavitiesReview of Body Cavities
Smaller CavitiesSmaller Cavities
Nasal cavityNasal cavity: space behind nose: space behind nose Buccal cavityBuccal cavity: space within mouth: space within mouth Orbital cavityOrbital cavity: houses eyes: houses eyes
Nasal Buccal Orbital
Abdominal RegionsAbdominal Regions
Illustrations of inguinal and umbilical Illustrations of inguinal and umbilical herniashernias
Abdominal QuadrantsAbdominal Quadrants
Simpler way to compartmentalize abdominal Simpler way to compartmentalize abdominal region is to separate into anatomical region is to separate into anatomical quadrantsquadrants
Helpful in describing Helpful in describing locationlocation of abdominal pain of abdominal pain
Abdominal PainAbdominal Pain
Knowing organs located in Knowing organs located in quadrantquadrant where pain is where pain is arising can give a clue as to what arising can give a clue as to what typetype of problem of problem the patient hasthe patient has Right lower quadrantRight lower quadrant ( (RLQRLQ) pain: appendicitis) pain: appendicitis Right upper quadrantRight upper quadrant ( (RUQRUQ) pain: liver or ) pain: liver or
gallbladder problemsgallbladder problems Right or Left flankRight or Left flank pain: Renal calculi ( pain: Renal calculi (Kidney Kidney
stonesstones)) Right or left inguinalRight or left inguinal pain: Renal calculi or hernia pain: Renal calculi or hernia
The spinal column
CervicalCervical Column Column
Vertebra Vertebra 1-7 (Neck)1-7 (Neck) ThoracicThoracic Column Column
Vertebra Vertebra 1-12 (Chest)1-12 (Chest) LumbarLumbar Column Column
Vertebra Vertebra 1-5 (low Back)1-5 (low Back) SacrumSacrum (fused) (fused)
Vertebra Vertebra 1-5 (very low 1-5 (very low Back)Back)
CoccyxCoccyx: tail-bone: tail-bone
Additional Body RegionsAdditional Body Regions
Body RegionsBody Regions
Body Regions cont.Body Regions cont.
X-Rays (Radiograph or Roentgenogram)X-Rays (Radiograph or Roentgenogram)
Produced by Produced by passingpassing X-ray radiationX-ray radiation
through body onto photographic filmthrough body onto photographic film.. ExposureExposure to X-raysto X-rays causes causes
photographic film to photographic film to darken.darken. Radiolucent Radiolucent areasareas of body allow X-rays of body allow X-rays
to pass through to film easily; produceto pass through to film easily; produce
darkdark areas on film. areas on film. RadiopaqueRadiopaque areasareas of body allow fewer of body allow fewer
X-rays to pass through to film; produce X-rays to pass through to film; produce
lightlight areas on the film. areas on the film.
X-Rays cont’dX-Rays cont’d
Each component of body has a Each component of body has a
characteristic characteristic densitydensity & & appearanceappearance
on X-ray.on X-ray. AirAir: : least denseleast dense; shows up ; shows up blackblack
on X-ray.on X-ray. Tissue/FatTissue/Fat: density depends on: density depends on
thicknessthickness of tissue; thicker the of tissue; thicker the
tissue, tissue, lighterlighter the appearance the appearance
on X-ray.on X-ray.Is this x-ray Is this x-ray normal or normal or abnormal?abnormal?
Why?Why?
X-ray contX-ray cont
Water, Blood & EdemaWater, Blood & Edema: :
mid-range density. Appearancemid-range density. Appearance
is is lighter than airlighter than air, but , but not as not as
whitewhite as bone/metal. as bone/metal. Bone/metalBone/metal: highest density. : highest density.
Appears Appears white white on X-ray.on X-ray.
Is this x-ray Is this x-ray normal or normal or abnormal?abnormal?
Why?Why?
Standard X-Ray PositionsStandard X-Ray Positions
PosteroanteriorPosteroanterior ( (PAPA)) X-ray beam passes from X-ray beam passes from
patient’s patient’s back to patient’s back to patient’s frontfront and then onto film and then onto film
Standard view for chest X-Standard view for chest X-rayray
AnteroposteriorAnteroposterior ( (APAP)) X-ray beam passes from X-ray beam passes from
patient’s patient’s front to patient’s front to patient’s backback and then onto film and then onto film
Often used in Often used in portable portable chest chest X-raysX-rays
PneumothoraxPneumothorax
Is this a Left or Is this a Left or Right Right
Pneumothorax?Pneumothorax?
Why?Why?
Lateral Chest X-RayLateral Chest X-Ray
LateralLateral X-ray beam passes X-ray beam passes
from from one side of one side of patient to otherpatient to other, and , and then onto filmthen onto film
Often used as Often used as compliment to PA compliment to PA viewsviews, to get better , to get better 3-D3-D perspective perspective
Is this a Left Is this a Left or Right or Right
Lateral CXR?Lateral CXR?
Why?Why?
Computerized Tomography Computerized Tomography (CT or CAT Scan)(CT or CAT Scan)
ProducesProduces series of series of cross-sectional cross-sectional ““slicesslices” through body” through body
GeneratesGenerates high-high-resolution imagesresolution images with more information with more information about about 3-D orientation3-D orientation of structuresof structures
ExposesExposes body to body to much higher levels of much higher levels of radiationradiation than than traditional X-raytraditional X-ray
What view is What view is this CTScan?this CTScan?
Why?Why?
What view is this What view is this CTScan?CTScan?
Why?Why?
Magnetic Resonance Imaging (MRI)Magnetic Resonance Imaging (MRI)
UsesUses magnetic magnetic energyenergy to image body to image body
ProducesProduces cross-cross-sectionalsectional images images
ImagesImages have much have much better claritybetter clarity than CT than CT
What view What view are these are these
MRIs?MRIs?
Why?Why?
Magnetic Resonance Imaging (MRI) (cont’d)Magnetic Resonance Imaging (MRI) (cont’d)
Cannot be used by all patientsCannot be used by all patients Patients with certain metallic componentsPatients with certain metallic components in in
body (like metallic aneurysm clips or heart body (like metallic aneurysm clips or heart valves) cannot be exposed to magnetic field valves) cannot be exposed to magnetic field of MRI; would make metal components of MRI; would make metal components shift in shift in bodybody
Patients who are claustrophobicPatients who are claustrophobic may not be may not be able to tolerate entering small tunnel of able to tolerate entering small tunnel of traditional (closed) MRI; open MRIs are traditional (closed) MRI; open MRIs are alternative for these patientsalternative for these patients
Ultrasound (Sonography)Ultrasound (Sonography) UsesUses sound wavessound waves to image body to image body Allow body actions to be Allow body actions to be imaged in real timeimaged in real time Uses includeUses include::
Observing Observing fetalfetal development and movement development and movement Observing Observing actionsactions of of heart valvesheart valves
Abdominal Ultrasound
Cardiac Ultrasound