Endocrine, Paracrine, Autocrine and Inercrine System

Question 1

What are the 3 main routes for receptor based signals

Answer 1

Nervous system
Endocrine system
Locally produced fazcotrs

Question 2

What are the two main types go hormones

Answer 2

1. Enter the cell and bind to intracellular receptors

2. Bind to receptors on plasma membrane

Question 3

What are the two types of secondary messenger

Answer 3

cAMP

Ca++

Question 4

What does cAMP do

Answer 4

It increases the activity of enzymes and uses adenyl class to convert ATP into cAMP

Question 5

What is cholera

Answer 5

Letha disease caused by a bacteria which can cause severe diarrhoea and abdominal cramping.

Question 6

How does a person become infected with cholera

Answer 6

Cholera toxin enters the gut and binds covertly to the G protein that controls the adenylate class acvtity

This
increases adenyl cyclase activity
Increases cAMP
increases sodium and water into the gut

Question 7

What is paracrine communication

Answer 7

When a releases a signalling molecule into tis immediate environment

Question 8

What is autocrine communication

Answer 8

A cell releases a molecule which is bound by its own receptors.