Midterm Practice Q's

Question 1

AGRP stimulate:

Answer 1

increase desire to eat

Question 2

Short term regulation of food intake is influenced by:

Answer 2

ghrelin

Question 3

leptin decreases:

Answer 3

appetite

Question 4

which signaling molecule increases food intake and decreases the rate of genetic reproduction:

Answer 4

neuropeptide Y

Question 5

which signaling molecule is produced during fasting and increases appetite:

Answer 5

ghrelin

Question 6

an obese child who cannot produce leptin, is most likely to benefit from:

Answer 6

leptin injections

Question 7

which statement about body fat is true:

Answer 7

excess visceral fat secretes molecules that can lead to other health issues

Question 8

increase body adipose tissue:

Answer 8

increases leptin secretions

Question 9

the integrating center for appetite control and weight control is:

Answer 9

hypothalamus

Question 10

carotid bodies are MOST responsible to changes in:

Answer 10

(all of these)

• changes in blood PCO2
• blood O2 levels
• blood H2O levels

Question 11

increase pneumotaxic center activity will:

Answer 11

fast shallow breathing 30-40 breaths/min

Question 12

stretch receptors of alveolar walls activate:

Answer 12

vagus nerve

Question 13

receives input from the reticular activating system:

Answer 13

apneustic center

Question 14

during normal breathing exhalation is a result of:

Answer 14

decrease in DRG activity and elastic recoil

Question 15

apneustic breathing is:

Answer 15

prolonged inspiration (30sec)

Question 16

when a person purposefully, blowing up a balloon, exhalation of expiratory neurons:

Answer 16

activation of somatic motor neurons via cortico-spinal tract

Question 17

the herring-breuer reflex:

Answer 17

decreases activity of the DRG

Question 18

the DRG:

Answer 18

activated by the apneustic center

Question 19

information about pain, temp, and emotion experience will be sent to:

Answer 19

pneumotaxic center from the hypothalamus and limbic

Question 20

chemoreceptors in the medulla oblongata measure:

Answer 20

pH of CSF

Question 21

with defective leptin receptors there is no point is giving __.

Answer 21

leptin

anytime a receptor is defective then there’s no point in injecting them with the hormone

Question 22

apnesutic center activates __ & __:

Answer 22

• DRG (for normal breathing)

- & pneumotaxic center

Question 23

pneumotaxic center inhibits:

Answer 23

the apneustic

Question 24

if the pneumotaxic center stopped working, you would have:

Answer 24

apneustic breathing

Question 25

which molecule decreases food intake & decreases glucose release from the liver?

Answer 25

amylin

Question 26

which factor can influence appetite and weight control?

Answer 26

(all of these)

• addiction to food
• food content of salt, sweet flavorings and fat
• signals to the brain from the digestive tract
• signals to the brain from adipose tissue

Question 27

apneustic breathing consists of:

Answer 27

long inhalations and short exhalations

Question 28

cholecystokinin is released from the duodenum and the jejunum in response to:

Answer 28

fatty acids

Question 29

short term regulation of feedings involves all of the following except:

Answer 29

a-GI stretch inhibits feeding
b-ghrelin inhibits feeding (***answer)
c-CCK and insulin release inhibit feeding
d-PYY and GLP inhibit feeding

Question 30

the feeding center of the brain is:

Answer 30

lateral hypothalamus

Question 31

which combinations of signals activates the sense of food satiety?

Answer 31

elevated levels of both insulin and glucose in blood

Question 32

which molecule stimulates the sense of hunger and is secreted when stomach is empty?

Answer 32

ghrelin

Question 33

the herring breuer reflex:

Answer 33

inhibits the drive to inhale in response to stretch of the lungs

Question 34

which region of the brain directly activates inspiration during quite breathing?

Answer 34

dorsal respiratory group

Question 35

the integrating system for neural regulation of respiration is located in the:

Answer 35

medulla oblongata

Question 36

leptin secretion can be increased by:

Answer 36

increased sleep

Question 37

which vitamin is water soluble?

Answer 37

B2 (thiamine)

Question 38

which of the following changes would be expected to stimulate hunger in a person who has not eaten for 24 hours?

Answer 38

increased neuropeptide Y in hypothalamus

Question 39

if one’s respiratory quotient (RQ) was 0.8, which of the following conditions most likely would drive the RQ towards 1.0?

Answer 39

eating a bowl of fruit loops (with skim milk)

Question 40

the integrating center for appetite and weight control is located in the:

Answer 40

hypothalamus

Question 41

which molecule increases metabolic rate, and decreases the drive to eat?

Answer 41

leptin