Week 6 pt 3 - Ingestive Behavior

Question 1

Homeostasis of Cellular Fluid

Answer 1

Intracellular fluid = 2/3 volume
Extracellular fluid = 1/3 volume

Question 2

2 types of Extracellular fluid

Answer 2

• Intravascular–blood plasma
• Interstitial–fluid that bathes the cells
  (and a little CSF)

Question 3

the ability of a surrounding solution to cause a cell to gain or lose water via osmosis

Answer 3

Tonicity

Question 4

Satiety mechanisms

Answer 4

Empty stomach - triggers hunger - eating - triggers satiation (the opposite response)

Question 5

2 Types of Thirst

Answer 5

Osmometric thirst
Volumetric Thirst

Question 6

Thirst triggered by Cell Dehydration

Answer 6

Osmometric thirst

Question 7

Thirst when intravascular (blood plasma) volume decreases aka Hypovolemia. Occurs when the blood volume drops due to a loss of extracellular fluid (the outside surrounding fluid)

Answer 7

Volumetric Thirst

Question 8

Causes of Volumetric Thirst

Answer 8

Bleeding, vomiting, diarrhea

Question 9

Dehydration of cells is part of body’s _________ _________ process

Answer 9

Natural dying

Question 10

Giving IV fluid to people who are dying causes what 3 things?

Answer 10

• Swelling
• Edema
• Eventual respiratory distress

Question 11

hormone released by the stomach when ind. are fasting or the digestive system is empty

Answer 11

Ghrelin

Question 12

LOW Ghrelin = ↑ cortisol =

Answer 12

Stress and Anxiety

Question 13

HIGH Ghrelin = ↓ cortisol =

Answer 13

Reduced Stress and Anxiety “stress eating”

Question 14

Experience of hyper-phagia due to excessive levels of ghrelin and they never feel satiated/full

Answer 14

Prader-Willi Syndrome

Question 15

Lateral hypothalamus:
When destroyed?
When activated?
Produces what?

Answer 15

• Stop eating and drinking when destroyed
• Overeating when activated
• Produces Orexin - motivation to eat

Question 16

Ventromedial hypothalamus:
When destroyed?
When activated?

Answer 16

• Overeating when destroyed
• Suppression of hunger/eating when
  activated

Question 17

decreasing stomach size (gastric band) causes what?

Answer 17

ghrelin levels drop sooner

Question 18

US#14 world wide for what?

Answer 18

obesity percentages

Question 19

Combination of __________ and __________ produced significant weight loss among individuals with obesity

Answer 19

nalrexone & bupropion

Question 20

Deficiency of Vitamin D causes?

Answer 20

Depression/Negative emotions

Question 21

Magnesium Deficiency causes?

Answer 21

STRESS! Which can increase agitation, anxiety, sleeplessness, headaches, and apathy

Question 22

Omega-3 Fatty Oils can be added to therapy to help with what 2 disorders?

Answer 22

Depression (mostly) and ADHD

Question 23

Twin studies = 58-76% heredity of what disorder?

Answer 23

Anorexia

Question 24

Treatment for anorexia (3)

Answer 24

• CBT
• increasing eating speed
• stimulation of anterior cingulate cortex (ACC)?

Question 25

What neurotransmitters are associated with the bulimia "feedback loop."

Answer 25

DA, 5HTP & NE

Question 26

5x↑risk of heart attack, over all risk of hypovolemic shock, kidney failure, UTI is associated with what?

Answer 26

Bulimia Nervosa