Anatomy Exam 3

Front 1

which statement is correct concerning the terms afferent and efferent with respect to the nervous system?
A. afferent refers to to the conductionof an impulse outward from the CNS
B. both terms refer to conducting impulses ouyward form the CNS although afferent pathways only carry sensory impulses
C. efferent refers to the conduction of motor impulses toward the CNS
D. Afferent refers to the conduction of sensory impulses toward the CNS
E. both terms refer to conducting impulses toward the CNS

Back 1

D. Afferent refers to to the conduction of sensory impulses toward the CNS

Front 2

clusters of gray matter that contain neuron cell bodies and lie deep within white matter are the-

Back 2

cerebral nuclei

Front 3

what is the correct order of the cranial menings, from superficial to deep?

Back 3

dura mater, arachnoid mater, pia mater

Front 4

which is not a function of CSF?
A. remove waste and products from the brain
B. reduce the effective weight of the brain
C. transport nutrients and chemicals
D. promote mitosis within neuronal tissue
E. provide a liquid cushion to protect the brain from sudden movements

Back 4

D. promote mitosis within neuronal tissue

Front 5

CSF is formed where?

Back 5

choroid plexus

Front 6

a nerve is-

Back 6

a bundle of parallel axons in the PNS

Front 7

the major pathway of communicationbetween the right and left cerebral hemisphere is the-

Back 7

corpus callosum

Front 8

this portion of the brain secretes the hormone meletonin, which helps to regulate the body's circadian rhythm-

Back 8

pineal gland

Front 9

which part of the brain receives sensory information and before sending it to the cerebral cortex-

Back 9

thalamus

Front 10

this portion of the brain ensures that skeletal muscle contraction follows the correct pattern leading smooth, coordinated movements-

Back 10

cerebellum

Front 11

vasoconstriction of the arteries will result in _____________ in blood pressure

Back 11

an increase

Front 12

what does the red portion indicate

Back 12

lateral sulcus

Front 13

where is the temporal lobe?

Back 13

on the side of the head

Front 14

in and electrocardiogram, the QRS wave denotes which of the following:
A. arterial depolarization
B. arterial valve opening
C. ventricular repolarization
D. semilunar valve closing
E. ventricular depolarization

Back 14

E. ventricular depolarization

Front 15

the glossy-white appearance of most axons is due to-

Back 15

the high lipid content of the myelin seath

Front 16

a single nerve contains-

Back 16

both motor axons and sensory axons

Front 17

which is NOT a characteristic of neurons?
A. high mitoic rate
B. high metabolic rate
C. requires supplies of glucose and oxygen
D. extream longevity
E. no exceptions; all are correct

Back 17

A. high mitoic rate

Front 18

a network of interwoven spinal nerves is a-

Back 18

plexus

Front 19

following an injury to his arm , a patient complains that he has no sensations from his thumb, his index finger, middle finger, and ring finger. you suspect that he has damaged the-

Back 19

radial nerve

Front 20

axons terminates at each of the following locations except:
A. other neurons
B. bone
C. smooth muscle cells
D. glands
E. skeletal muscle cells

Back 20

B. bone

Front 21

during ventricular systole-

Back 21

the semilunar vales open and the AV vales close

Front 22

the layer if the heart wall composed of cardiac muscle is the-

Back 22

myocardium

Front 23

choose chronological order of these steps:
A. a nerve impulse reaches the synaptic knob in the presynaptic cell
B. neurotransmitter molecules diffuse across the synaptic cleft
C. a nerve impulse begins in the postsynaptic cell
D. neurotransmitter molecules bind to receptors in the psosynaptic cell
E. a voltage change occurs in th epostsynaptic cell

Back 23

a,b,d,e,c

Front 24

the nerve responsible for stimulation the movement of the rectus muscle (one of the quadriceps) is the ______ nerve

Back 24

femoral

Front 25

what is the correct order for the events that occur during a reflex?
A. impulse travels through sensory neuron to the CNS
B. a stimulus activates the receptor
C. information is processed by the interneurons
D. motor neuron transmits impulse to effector
E. effector responses

Back 25

b,a,c,d,e

Front 26

the simplest reflex is the ________ reflex

Back 26

monosynaptic

Front 27

the neurons that project inferiorly from the spinal cord are collectively called the -

Back 27

cauda equina

Front 28

cell bodies of senspry neurons are located in the-

Back 28

dorsal root gaglion

Front 29

which of the following is the neurotransmitter that causes skeletal muscle fiber contraction?
A. dopamine
B. glycine
C. acetylcholine
D. serotonin

Back 29

C. acetylcholine

Front 30

following an injury to his arm, a patient complains that he has no sensation from hie pinky. you suspect that he has damaged the-

Back 30

medial nerve

Front 31

of the normal heart sounds, the initial "lubb" sound of the heart beat is heard when-

Back 31

AV vales close

Front 32

which is the correct order of artery types from the passage of blood from the heart to the capillaries?
A. elastic arteries
B. arterioles
C. muscular arteries

Back 32

a,c,b

Front 33

during the cardiac cycle, how many of the four chambers of the heart contract at any given time?

Back 33

2

Front 34

the cell-to-cell contacts between the ends of th cardiac muscle fibers are called-

Back 34

intercalated discs

Front 35

which action causes the closure of the right AV valve?

Back 35

contraction the the right ventricle

Front 36

the epicardium is another name for the-

Back 36

visceral layer of the serous pericardium

Front 37

the papillary muscles attach to the cusps of the AV valve by means of the-

Back 37

chordae tendinaea

Front 38

as blood is pumped into the arterial trunks past the semilunar vales it-

Back 38

pushes against the cusps, forcing the valves open

Front 39

which vessel carries oxygenated blood from the lungs to the heart?

Back 39

pulmonary veins

Front 40

during ventricular distole-

Back 40

the semilunar vales close and the AV valves open

Front 41

where is the pulmonary semilunar vale?

Back 41

smaller front valve

Front 42

what wall is showing on the right side of the heart?

Back 42

wall of the right ventricle

Front 43

blood pressure is lowest in the-

Back 43

veins

Front 44

which sequence indicates the correct pathway for blood in the arterial flow of the upper appendage ?

Back 44

sunclavian artery, axillary artery, brachial artery, and ulnar artery

Front 45

the __________ is composed of an endothelium and a subendthelial layer made up of a thin of areolar connective tissue?

Back 45

tunica intima

Front 46

"oh once one take the anatomy final very good vacations are heavily" is a mnemonic device to help you remember-

Back 46

the names of the cranial nerves

Front 47

choose the correct order of blood vessels from largest to smallest:
1. capillaries
2. femoral artery
3. aorta
4. arterial
5. common lilac artery

Back 47

3,5,2,4,1

Front 48

the arterial branches that originate from the celiac trunk as it branches off of the abdominal aorta are the-

Back 48

left gastric, splenic, and common hepatic arteries

Front 49

cardiac muscle is thickest in the-

Back 49

left ventricle

Front 50

the motor cortex of the brain is located within the _____ lobe

Back 50

frontal

Front 51

the dorsal root of the spinal nerve transmits __________ information _________ the spinal cord

Back 51

sensory; toward

Front 52

the body surface region monitored by a specific pair of spinal nerves is called (a)

Back 52

dermatome

Front 53

the visusl cortex is located in the _______ lobe

Back 53

occipital

Front 54

the cortical surface of the cerebral hemispheres forms a series of grooves (valleys) called-

Back 54

sulci

Front 55

which of the following apply to the cranial nerves?
A. they are a part of the PNS
B. they may contain sensory, motor, or mixed nerves
C. they connect to the brain or brain stem
D. all the above
E. none

Back 55

D. all the above

Front 56

conscious control of the left brachii muscle is initiated in which region of the brain?

Back 56

right precentral gyrus

Front 57

the heart valve that closes during ventricular contraction-

Back 57

AV valves

Front 58

what returns oxygenated blood to the heart

Back 58

pulmonary veins

Front 59

the heart valve that opens during ventricular contraction-

Back 59

semilunar

Front 60

returns deoxygenated blood to the heart

Back 60

vena cava

Front 61

glial cells that helps to circulate CSF is-

Back 61

ependymal cell

Front 62

the glial cell that myelinates and insulates axons within the CNS is the-

Back 62

oligodendrocyte

Front 63

the glial cell that helps to form the blood-brain barrier is the-

Back 63

astrocyte

Front 64

the glial cell that myelinates and insulates axons in PNS system is the-

Back 64

neurolemmocyte

Front 65

the portion of the brain involved primary with vision is the-

Back 65

occipital lobe

Front 66

the postcentral gyrus is part of the-

Back 66

parietal lobe

Front 67

the primary motor cortex is part of the-

Back 67

frontal lobe

Front 68

personality and consciousness are functions associated with the-

Back 68

frontal lobe

Front 69

what tracts connect opposite hemispheres of the cerebrum together-

Back 69

commissural tracts

Front 70

what tracts link the cerebral cortex to the spinal cord

Back 70

projection tracks

Front 71

what tracts connect different regions of the cerebral cortex within the same hemisphere

Back 71

association

Front 72

the cranial nerve responsible for the movement of the medius rectus, superior rectus,inferior rectus, and the inferior oblique eye muscles id the _____

Back 72

oculomotor III nerve

Front 73

the cranial nerve that innervates smooth msucles and glands og the heart, lungs, larynx, trachea, and most abdominal organs is the _________

Back 73

vagus X nerve

Front 74

the cranial nerve that passes through the cribriform plate of the ethmoid bone is the ____________

Back 74

olfactory I nerve

Front 75

Bell palsy is a condition characterized by the paralysis of facial muscles, eyelid droop, and sagging at the coroners if the mouth. the cranial nerve most likely affected is the ____________

Back 75

facial VII nerve