ANS APEX

Question 1

Positive feedback examples

Answer 1

Childbirth
Coagulation cascade
Action potenitlas
Can lead to vsicous cycles

Question 2

Negative feedback loop examples

Answer 2

Cause stability when something is in excess or deficient
Mostly everything except 3
childbirth, coagulation, AP

Question 3

Endocrine cell signal

Answer 3

A hormone is secreted by an endocrine cell and transported thru the blood to act on a distant cell
Example- EPO

Question 4

Paracrine signaling

Answer 4

chemical singal from one cell and acts locally to regulate behavior of nearvy cells
neurotransmitters

Question 5

Autocrine signalling

Answer 5

a cell responds to a signal that itself produced
Norad synapses

Question 6

Signal sequence

Answer 6

1st msnger (ligand such as phenyl)
receptor (a-1)
effector ()
2ns messenger
(response)

Question 7

What chemical messengers are made from arachadonic acid?

Answer 7

prostaglandins
leukotreins
anandamide

Question 8

4 categories of molecules

Answer 8

small hydrophilic- amino acids, ach, t4, t3, gaba, glutamate
lipophilic- steroids, d3, pg, txa, lk
peptide/proteins-
others- atp, adenosine, gases like no and co

Question 9

Dopamine, epi, ne are derived from what amino acid?

Answer 9

Tyrosine

Question 10

4 G protein families

Answer 10

stimulatory
inhibitory
q
12,13