Adrenal Glands Flashcards Preview

Endocrine (updated 2016) > Adrenal Glands > Flashcards

Flashcards in Adrenal Glands Deck (24):
1

Characteristics of medulla

Makes epinephrine (more important) and norepinephrine
Not essential for life

2

What is the precursor catecholamine

tyrosine

3

Where are catecholamines produced and stored

Chromaffin cells

4

When are catecholamines released

Immediately upon stimulation

5

How long are catecholamines half life

Very short

6

Where are catecholamines broken down

liver and kidney

7

What are catecholamines

Epinephrine and norepinephrine

8

What are chromaffin cells

cells that secrete epinephrine and norepinephrine

9

What are vascular effects of epinephrine

constrict peripheral, dilate skeletal, and cardiac

10

What are the vascular effects of norepinephrine

General vasoconstrictor

11

Cardiovascular effects of epinephrine

Increases heart rate and force of contraction
Increase blood pressure

12

What does E and NE do to respiration

increase rate and depth of respiration

13

What does E and NE do to skeletal muscle

Increase strength of contraction

14

Effects of catecholamines on blood glucose and free fatty acids

Raise levels

15

Effect of E and NE on glycogenolysis

increase

16

E and NE effects on adipose tissue

lipolysis

17

E and NE effects on insulin

inhibits insulin secretion

18

What are some controller of adrenal medulla activity

stress, trauma, low temperature, and severe hypoglycemia

19

Why do hormones act different in different areas

There are different types of receptors

20

What is pheochromocytoma

Chromaffin cell tumor
Excess levels of catecholamines
Malignant
old dogs

21

What are some symptoms of excess adrenal medulla secretions

Hypertension
panting
trachycarcia
muscle wasting

22

What is multiple endocrine neoplasia (men)

Autonomous and excess secretion of more than one hormome

23

What are the two parts of the adrenal glands

Medulla and cortex

24

What are two hormones made from tyrosine

Norepinephrine and epinephrine