3 Review Q's Final exam

Question 1

what is myelin?

Answer 1

white, fatty substance that covers nerve fibers

Question 2

what does the hypothalamus do?

Answer 2

regulates and integrates the ANS, regulates emotional response and behavior, regulates body temperature, regulates food intake, regulates water balance and thirst, and regulates endocrine system activity

Question 3

how many pairs of cranial nerves are there?

Answer 3

12

Question 4

how many pairs of spinal nerves are there?

Answer 4

31

Question 5

what are the two divisions of the autonomic system?

Answer 5

sympathetic and parasympathetic

Question 6

what does an axon do?

Answer 6

it carries nerve impulses away from the cell body

Question 7

what is the most commonly used local anesthetic for a MOS?

Answer 7

zylocaine

Question 8

why do we count the number of sutures before and after suture removal?

Answer 8

to ensure standard of care is met

Question 9

why is epinephrine given in addition to a local anesthetic?

Answer 9

the epinephrine is a vasodilator that extends the time a local anesthetic works

Question 10

impenetrable means what?

Answer 10

not easily penetrated

Question 11

why do we cleanse sutures before removing them?

Answer 11

cleansing removes dried exudate; prevents it from falling into the wound.

Question 12

what do we do if a tool that a doctor wants is not available for a MOS?

Answer 12

we ask the doctor for their preference for tool replacement.

Question 13

how many days do sutures remain in?

Answer 13

7-14 days dependent upon where the sutures were placed and how well the site is healing.

Question 14

what does approximate mean?

Answer 14

to close a wound… usually with sutures or self-adhesive strips

Question 15

what type of needle would be used to remove a mole from the neck?

Answer 15

swaged cutting needle

Question 16

why is a tetanus toxoid be needed?

Answer 16

to prevent a tetanus infection

Question 17

what could we use as a substitute for betadine in the event a patient is allergic?

Answer 17

chlorahexaline or any surgical cleansing product that is free of betadin

Question 18

what produces myelin in the CNS?

Answer 18

oligodendrocytes

Question 19

what is a resting membrane?

Answer 19

its the cell membrane of a nonconductive, or resting, neuron

Question 20

what happens during repolarization?

Answer 20

K+ channels open and K+ moves out of the axon

Question 21

what happens during polarization?

Answer 21

Na+ channels open and Na+ moves into the cell

Question 22

what is a reflex?

Answer 22

an automatic, involuntary response to some change, either inside or outside of the body