Chapter 6 Lecture Slides (Part 1)

Question 1

7 of the 9 hormones produced by the hypothalamus…

Answer 1

control other hormones made by and released from the glandular tissue of the anterior pituitary

Question 2

connect hypothalamus to blood/brain barrier, what is the relationship?

Answer 2

hypothalamus is one of the few areas of the brain that is not protected by the blood/brain barrier

Question 3

________ causes an increase of blood osmolarity

Answer 3

dehydration

Question 4

an increase in blood osmolarity stimulates _______

Answer 4

osmoreceptors

Question 5

ADH is released in response to what?

Answer 5

dehydration

Question 6

how is ADH released?

Answer 6

hypothalamus is not protected by blood/brain barrier, so it can detect changes in blood

increase in blood osmolarity stimulates osmoreceptors

osmoreceptors contain neurons that synapse with the hypothalamus

hypothalamus sends a signal to the posterior pituitary to release ADH

Question 7

EtOH does two things. what are they?

Answer 7

1. inhibits ADH secretion from the posterior pituitary
2. suppresses neurological activity, which causes behavior changes

Question 8

why does drinking too much alcohol cause a headache?

Answer 8

alcohol is a diuretic. it acts on your kidneys to make you lose more fluid than you’re taking in, get dehydrated, and that can cause headaches

Question 9

how does the hypothalamus control the anterior pituitary?

Answer 9

produces 7 hormones that are released into the hypothalamic portal system

Question 10

a portal vein comes off of a capillary bed in the hypothalamus and does what?

Answer 10

goes directly to a capillary bed in the anterior pituitary