Exam 2 Items from Quizes

Question 1

Epiphysis

Answer 1

the site of secondary ossification during endochondral bone development is in the _____ of a long bone.

Question 2

Flat Bones

Answer 2

occipital and temporal bones are good examples of:

Question 3

appendicular skeleton parts

Answer 3

pectoral girdle, scapula, clavicle, hip

NOT PART OF IT IS STERNUM

Question 4

lamellae

Answer 4

layers of bone are called

Question 5

sternum is part of what skeleton

Answer 5

part of the axial skeleton

Question 6

transverse

Answer 6

occurs straight across the long axis of the bone

Question 7

function of skeletal system important in a car accident

Answer 7

protection of internal organs

Question 8

Calcitonin and parathyroid hormone

Answer 8

pair of hormones that has actions that oppose each other (with respect to their direct effects on bone tissue)

Question 9

trabeculae

Answer 9

only found in spongy bone

Question 10

atrophy

Answer 10

decrease in the number of myofibrils and sacromers in muscle

Question 11

abductor

Answer 11

moves the bone away from the midline

Question 12

functions of skeletal muscle

Answer 12

movement, maintenance of posture, heat generation (NOT HEART CONTRACTION)

Question 13

muscle whose primary movement is performing extension

Answer 13

rectus femoris

Question 14

what does extensibility in muscles mean

Answer 14

ability to lengthen

Question 15

used to produce rapid, forceful contractions to make quick powerful movements

Answer 15

fast glycolyctic (FG) fibers

Question 16

myosin head contains binding sites for what two molecules

Answer 16

actin and ATP

Question 17

which one or two muscle types contain myofibrils composed of sarcomeres

Answer 17

skeletal and cardiac muscle

Question 18

T/F if calcium can no longer bind to the troponin of the thin filaments then myosin-binding sites on actin are blocked

Answer 18

true

Question 19

thalamus

Answer 19

gateway to the cerebral cortex

Question 20

tracts of the nervous system are

Answer 20

bundles of axons (fibers) located in the central nervous system

Question 21

what event is occurring during the upswing of the action potential curve (from -55 mV to 30 mV)

Answer 21

rapid Na+ entry depolarizes cell

Question 22

what innervates the anterior leg

Answer 22

lumbar plexus

Question 23

motor neurons carry nervous impulses from

Answer 23

the CNS to the PNS

Question 24

olfactory nerve (I)

Answer 24

cranial nerve responsible for the sense of smell

Question 25

myelin sheath

Answer 25

lipid-rich layer of insulation that surrounds an axon in the PNS

Question 26

dorsal root ganglion

Answer 26

cell bodies of sensory neurons are found in the ___ of its corresponding spinal root.

Question 27

enteric nervous system located in the

Answer 27

digestive tract

Question 28

what lobe is the primary visual cortex and visual association area, involved in receiving and integrating visual input found in

Answer 28

occipital lobe

Question 29

cranial nerve responsible for contraction of the lateral rectus muscles of the eyes

Answer 29

abducens nerve

Question 30

section of axon lacking a myelin sheath is know as the

Answer 30

node of Ranvier

Question 31

what connects to the tympanic membrane

Answer 31

malleus

Question 32

most external layer of the eyeball is the

Answer 32

sclera

Question 33

special senses

Answer 33

taste, smell, balance, hearing

Question 34

Not a special sense

Answer 34

touch

Question 35

head position, such as a head tilted forward, is sensed by the __

Answer 35

vestibule

Question 36

structure of the inner ear

Answer 36

cochlea

Question 37

usually caused by a X-linked genetic condition

Answer 37

color blindness

Question 38

what happens to the stereocilia of hair cells when the basilar membrane vibrates

Answer 38

they bend

Question 39

which type of taste involves the sensitivity of gustatory cells to the presence of glucose dissolved in the saliva

Answer 39

sweet

Question 40

superior rectus

Answer 40

muscle that moves the eyeball upward

Question 41

anosmia

Answer 41

loss of smell sensation