Exam 2 A&P Flashcards
the 2 parts of the skeleton
appendicular & axial
the 2 parts of the skull
cranium and face
how many bones in the human body
206
5 types of bones
long, short, flat, irregular, round
what is the composition of bone
collagen and minerals
compare osteoclasts, blasts, and cytes
clasts- digest bone
blasts- make bone
cytes-bone cells
describe the periosteum
dense connective tissue sleeve
describe the endosteum
dense connective tissue lining of the medullary cavity
describe the bone tissue of compact bone
made of osteons
compare red and yellow marrow
red-blood cells
yellow- fat
5 functions of skeletal system
support, storage, movement, hematopoiesis, protection
describe hematopoiesis
process of making BC
what material is stored in bone
calcium ions
how is calcium released from bone
osteoclasts
how is calcium deposited in bone
osteoblasts
how is calcium taken in by the body
diet
2 major uses for calcium by human body
muscle contraction & nerve cell function
describe intramembranous ossification
soft tissue turning to bone
describe endochondral ossification
cartilage turning to bone
what is the importance of the epiphyseal plate
found in epiphysis & determines amount of growth.
what is an articulation in the skeletal system
where bone meets bone
3 types of articulation
fibrous, cartilage, synovial
what is a synovial joint
joint surrounded by synovial membrane
6 synovial joints
ball & socket, hinge, pivot, plane, condylar, saddle
describe the parts of the synovial joint capsule in the knee
dense CT
what are cranial sutures and how they form
fibrous joints that come from fontanels
what is the purpose of fontanels
skull flexibility in child birth
type of joint formed from fibrocartilage intervertebral discs and vertebrae
symphysis
example of a cartilaginous symphysis joint
pubic symphysis
bones of upper limbs
clavicle, scapula, humerus, ulna, radius, carpals, metacarpals, phalanges
bones of lower limb
hip bones, femur, patella, tibia, fibula, tarsals, metatarsals, phalanges
bones of cranium
frontal, parietal, temporals, occipital
type of joint formed between mandible and temporal bones
modified hinge because there is flexion, extension, and a limited some more.
bones in the face
maxillary, cheek bones, mandible, zygimatic
3 major parts of axial skeleton
skull, vertebral column, rib cage
the first 2 vertebrae
atlas & axis
type of synovial joint between first 2 vertebrae
a pivot joint that rotates
4 functions of the skin
protection, thermoregulation, sensation, makes vit D
describe the cells of stratum basale
bottom of epidermis & reproduce
describe the cells of stratum spinosum
keratinocytes
describe the cells of stratum granulosum
layer of keratinocytes & protein fiber
function of keratin
protein fiber
what are keratinocytes
cells that make keratin
describe the subcutaneous layer
loose CT
describe cells of stratum corneum
dead layer that is outside of the skin
describe function and location of melanocytes
produce pigment called melanin
what determines skin pigment intensity
amount of melanin present- genetic
why does tan happen
inc in melanin production after sun exposure
describe the dermis layer
bottom layer of CT
what determines anemia of skin tone
decrease in RBC
functions of free nerve endings, Pacinian corpuscles, and Meissner’s corpuscle
pain and touch receptors
function of lunula nail
where nail grows fastest
compare 3 types of glands in demis
merocrine, apocrine, and sweat glands
how does skin make vit D
UV light exposure on skin
function of vit D
help absorption of calcium
how does skin reduce temperature
sweat
how does skin inc temperature
triggers shivering & BV contractions
rule of nines in burn injuries
head & neck-9%, anterior thoax-18%, posterior thorax- 18%, arms- 9% ea, legs- 18 ea, perineum- 1 %
what is histology
study of tissues
4 types of histological tissues
epithelial, connective, nervous, muscle
4 functions of epithelial tissue
protection, filtration, absorption, secretion
2 ways epithelial tissue are classified
shape & layers
basic location of all epithelial tissues
lining
2 locations in bdy with simple squamous epithelium
lungs>diffusion
BV>diffusion
2 locations in body where you find cuboidal epithelium & functions
glands>secretion
kidneys>absorption
2 locations in bdy to find cuboidal epithelium
stomach>absorption
intestines>absorption
composition, location, and function of serous mucous and cutaneous membranes
serous memb- simple squamous, serous fluid, a covering
mucous-simple columnar, lining organ, protection
cutaneous- skin, stratified squamous, protection
tissues of CT proper
loose & dense
3 specialized connective tissues
blood, cartilage, bone
4 funcions of CT
carriers of O2, fight infections, support, movement
3 types of CT fibers
reticular, collagen, elastic
3 loose CT
areolar, reticular, adipose
3 structures in bdy made of dense CT
dermis, ligaments, tendons
3 types of dense CT
dense regular, dense irregular, dense elastic
what is an extracellular matrix
non-living material in tissue - a secretion
describe BC
red blood cells, white BC, platelets
extracellular matrix in blood tissue
plasma
structural unit in compact bone tissue
osteon
what do spaces in spongy bone contain
red bone marrow
function of muscle tissue
movement
name the types of muscle tissue and 1 location for each
skeletal- attach to bone
smooth- inside organs
cardiac- heart
what are the light and dark striations in striated muscle fibers
light- I band
dark- A band
function of nervous tissue
communicates
major cell in nervous tissue
neuron