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Endocrine > Adrenal Glands > Flashcards

Adrenal Glands Flashcards

1
Q

Characteristics of medulla

A 
Makes epinephrine (more important) and norepinephrine
Not essential for life
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2
Q

What is the precursor catecholamine

A

tyrosine

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3
Q

Where are catecholamines produced and stored

A

Chromaffin cells

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4
Q

When are catecholamines released

A

Immediately upon stimulation

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5
Q

How long are catecholamines half life

A

Very short

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6
Q

Where are catecholamines broken down

A

liver and kidney

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7
Q

What are catecholamines

A

Epinephrine and norepinephrine

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8
Q

What are chromaffin cells

A

cells that secrete epinephrine and norepinephrine

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9
Q

What are vascular effects of epinephrine

A

constrict peripheral, dilate skeletal, and cardiac

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10
Q

What are the vascular effects of norepinephrine

A

General vasoconstrictor

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11
Q

Cardiovascular effects of epinephrine

A

Increases heart rate and force of contraction

Increase blood pressure

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12
Q

What does E and NE do to respiration

A

increase rate and depth of respiration

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13
Q

What does E and NE do to skeletal muscle

A

Increase strength of contraction

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14
Q

Effects of catecholamines on blood glucose and free fatty acids

A

Raise levels

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15
Q

Effect of E and NE on glycogenolysis

A

increase

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16
Q

E and NE effects on adipose tissue

A

lipolysis

17
Q

E and NE effects on insulin

A

inhibits insulin secretion

18
Q

What are some controller of adrenal medulla activity

A

stress, trauma, low temperature, and severe hypoglycemia

19
Q

Why do hormones act different in different areas

A

There are different types of receptors

20
Q

What is pheochromocytoma

A

Chromaffin cell tumor
Excess levels of catecholamines
Malignant
old dogs

21
Q

What are some symptoms of excess adrenal medulla secretions

A

Hypertension
panting
trachycarcia
muscle wasting

22
Q

What is multiple endocrine neoplasia (men)

A

Autonomous and excess secretion of more than one hormome

23
Q

What are the two parts of the adrenal glands

A

Medulla and cortex

24
Q

What are two hormones made from tyrosine

A

Norepinephrine and epinephrine

Endocrine (18 decks)

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