part 5

Question 1

What blocks H1 receptors?

Answer 1

Antihistamines

Question 2

What blocks H2 receptors

Answer 2

• Cimetidine
• Ranitidine

Question 3

The first brain peptides isolated were the ___________.

Answer 3

Enkephalins

Question 4

where are Pentapeptides (enkephalins) located?

Answer 4

in nerve cell terminals

Question 5

What does pentapeptides (enkephalins) do?

Answer 5

They bind to pain receptors and control pain

Question 6

A potent orexic (appetite-stimulating)
agent, affects the hypothalamus.

Answer 6

Neuropeptide Y

Question 7

An 11-amino acid peptide is involved in the transmission of pain signals

Answer 7

Substance P

Question 8

Is a peptide hormone that is critical for
maintaining blood glucose levels. It RAISES blood sugar

Answer 8

Glucagon

Question 9

is a peptide hormone produced by the pancreas that LOWERS blood sugar

Answer 9

Insulin

Question 10

These hormones are hydrophobic and, therefore, cross plasma membranes by diffusion.

Answer 10

Steroids

Question 11

Steroid hormones interact with what? and where

Answer 11

• protein receptors
• inside the cells

Question 12

Where are most of the protein receptors located?

Answer 12

• Most In the nucleus
• Some in the cytoplasm

Question 13

explain the steriod-receptor complex and its relationship with DNA

Answer 13

once the steriod-receptor complex is inside the nucleus, it binds with DNA resulting to changes in gene expression