UNIT 2 (Sept. 18): BASIC ANATOMICAL ORGANIZATION, HISTOLOGY and TISSUES Flashcards
difference between anatomy and physiology
anatomy = study of structure, physiology = study of function
palpatation
feeling a structure with the hands, such as palpating a lymph node or pulse
ausculation
listen to natural sounds made by body
percussion
examiner taps on body, feel for abnormal resistance or emitted sounds for abnormalities of pockets of fluid, air, scar tissue
dissection
carefully cutting and separating tissues to reveal their relationships
cadaver
dead human body
comparative anatomy
study of multiple species in order to examine similarities and differences and analyze evolutionary trends
exploratory surgery
opening the body to see whats inside for something wrong or what could be done
medical imaging
methods of viewing the inside of body without surgery
radiology
branch of medicine concerned with medical imaging
gross anatomy
structures that can be seen with the naked eye, whether by surface observation, radiology, or dissection
histology
microscopic anatomy
histopathology
microscopic examination of tissues for signs and diseases
cytology
study of the structure and function of individual cells
ultrastructure
fine detail down to molecule level revealed by the electron microscope
neurophysiology
physiology of nervous system
endocrinology
physiology of hormones
pathophysiology
mechanisms of disease
comparative physiology
study of how different species have solved problems of life (water balance, reproduction)
anatomical position
standing upright with flat feet on floor, arm at sides, palms and face directed forward
prone
laying face down
supine
laying face up
frontal plane
plane in anatomical position that splits the body front and back from shoulder to shoulder, lengthwise head to toe
sagittal plane
passes vertically though the body or an organ and divides it into right and left portions eg pelvic and head
transverse plane
plane in anatomical position that splits the body from top to bottom, at the midsection (elbow, navel)
section implies
an actual cut or slice to reveal internal anatomy
plane implies
imaginary flat surface passing through the body
median plane
aka midsagittal plane, a sagittal plane that divded the body or organ into equal halves
parasagittal plane
when a sagittal plane are off centre and divide body into unequal portions
frontal plane
aka coronal plane; extends vertically, but perpendicular to the sagittal plane and divides the body into anterior and posterior positions eg throracic cavities
anterior
front
posterior
back
transverse plane
aka horizontal plane; pass across body or organ perpendicular to its long axis; divides the body or organ in superior and inferior portions - eg CT scan
superior
upper
inferior
lower
ventral
toward the front or belly ; aorta is ventral to vertebral column
dorsal
toward the back or spine; vertebral column is dorsal to the aorta
anterior
body region that leads way in locomotion; toward ventral side (front); sternum is anterior to heart
posterior
region of body that comes last in local motion; toward dorsal side; esophagus is posterior to trachea
cephalic
toward head or superior end;brain develops from the cephalic end of the neural tube
rostral
towards forehead or nose; forebrain is rostral to the brainstem
caudal
toward tail or inferior end;spinal cord is caudal to brain
superior
above;heart is superior to diaphragm
inferior
below; liver is inferior to diaphragm
medial
toward median plane; heart is medal to the lungs
lateral
away from median plane; eyes are lateral to nose
proximal
closer to the point of attachment or origin; elbow is proximal to the wrist
distal
farther from the origin or attachment; the fingernails are at the distal ends of the fingers
ipsilateral
on same side of the body (right/left); liver is ipsilateral to the appendix
contralateral
on opposite sides of the body (right/left); spleen is contralateral to the liver
superficial
closer to the body surface; skin is superficial to the muscles
deep
farther from the body surface; the bones are deep to the muscles
dorsum
upper surface of the foot and back of the hand
axial region
head, neck (cervical region), and trunk
trunk
thoracic region and abdominal region
four quadrants of abdomen
right upper quadrant, left upper quadrant, right lower quadrant, left lower quadrant
nine regions of abdomen
right hypochondriac region, epigastric region, left hypochondriac region, right lumbar region, umbilical region, left lumbar region, right inguinal region, hypogastric region, left inguinal region
midclavicular line
vertical line that passes through midpoint of clavicle/collarbone and are two lines that distinguish the nine regions of the abdomen
subcostal line
superior horizontal line that dissects the abdominal regions, named because it connects the inferior borders of the lowest costal cartilages (cartilage connecting tenth rib on each side to inferior end of the sternum)
intertubicular line
inferior horizontal line of abdominal region; named because it passes from left to right between the tubercles (anterior superior spines) of the pelvis-two points of bone located about where the front pockets open on most pants
three abdominal pubic regions
epigastric, umbilical, hypogastric
three abdominal lateral regions
hypochondriac, lumbar, inguinal
appendicular region
upper and lower limbs/appendages or extremities
brachial region
arm
antebrachial
forearm
carpal region
wrist
fingers
digits
femoral region
thigh
crural region
leg
tarsal region
ankle
toes
digits
arm
refers only to that part of the upper limb between shoulder and elbow
leg
only to part of the lower limb between knees and ankle
segment
segment of a limb is a region between one joint and the next
viscera
organs contained in body cavities
visceral layer
inner body cavity membrane layer against the organ
parietal layer
superficial/outer layer membrane of body cavity
4 major body cavities
cranial, vertebral canal, thoracic cavity, abdominopelvic cavity
cranial cavitiy
enclosed by cranium; contains the brain; membranous lining is meninges
meninges
three fibrous membranes between the central nervous system and surrounding bone - dura mater, arachnoid mater and pia mater
vertebral canal
enclosed by the vertebral column (spine) and contains the spinal cord.
what separates the trunk of your body from the thoracic and abdominopelvic cavity
diaphragm
thoracic cavity
has three cavities, one mediastinum that contains heart, esophagus and trachea, and two pleural cavities that contain the lungs
mediastinum
region between the lungs, extending form base of the next to diaphragm. occupied by heart, major blood vessels connected to it, esophagus, trachea, and bronchi, and a gland called the thymus
pericardium
two layered membrane that enfolds heart; parietal layer and visceral later are separated by a space called the pericardial cavity, lubricated by pericardial fluid
caridac tamponade
when fluid puts pressure on the heart and prevents it from refilling
pleura
serous membrane that enfolds the lungs; visceral pleura (external surface of the lung), parietal pleura (lines inside of rib cake, lubricated by pleura fluid
abdominopelvic cavity
cavity that contains abdominal cavity(superiorly) and pelvic cavity (inferiorly), contains the peritoneum
pelvic cavity
spaced enclosed by the true(lesser) pelvis, containing the urinary bladder, rectum, and internal reproductive organs
peritoneum
two layered serous membrane with the parietal peritoneum (outer), visceral peritoneum (inner layer, peritoneal cavity which is filled with peritoneal fluid
retroperitoneal position
position of organs in abdominal cavity when they are against the posterior body wall are covered by peritoneum facing the peritoneal cavity
intraperitoneal positions
organs in abdominal cavity that are encircled by peritoneum and connected to the posterior body wall by peritoneal sheets
mesentry
visceral peritoneum at points when it forms a translucent, membranous curtain suspending and anchoring the viscera
serosa
mesentry at points where it enfolds and covers the outer surfaces of organs such as the stomach and small intestines
posterior mesentery
mesentery that suspends intestines from the posterior/dorsal abdominal wall
mesocolon
posterior mesentery of large intenstine
anterior mesentery
mesentery on the anterior body wall
great omentum
anterior mesentery - fatty membrane that hangs like an apron from the interfolateral margin of the stomach and overlies the intestines; unattached at its inferior border and can be lifted to reveal the intestines
lesser omentum
anterior mesentery - extends from the superomedial margin of the stomach to the liver