PHYS hypothalamus

Question 1

which thermoreceptors are heat-sensitive/cold-sensitive

Answer 1

heat - pre and superoptic

cold - cutaneous visceral

Question 2

what happens to set point T with sleep

with excercise

Answer 2

decrease

increase

Question 3

which part of the hypothalamus is responsible for heat loss behaviors

heat production behaviors

Answer 3

anterior

posterior

Question 4

mechanisms of heat production (4)

Answer 4

autonomic nervous system (esp sympathetic)
endocrine - thyroxine/epineph
muscular activity
non-shivering thermogenesis

Question 5

types of muscular activity (2)

Answer 5

shivering via dorsomedial posterior hypothalamus

increased voluntary activity via cortex

Question 6

types on non-shivering thermogenesis

Answer 6

hormones
    thyroxine
    epinephrine
increased food intake
brown adipose tissue

Question 7

types of heat loss

Answer 7

evaporative
conduction
convection
radiation

Question 8

two types of evaporative heat loss

Answer 8

insensible (respiratory)

sweating (controlled)

Question 9

what determines how much heat is lost to external environment

Answer 9

how much blood is sent to the skin

Question 10

innervation of a sweat gland is

symp/parasymp; NT

Answer 10

sympathetic

Ach to mAchR