Endocrine System Flashcards Preview

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Flashcards in Endocrine System Deck (21):
1

What is the super system of the body?

Nervous system + Endocrine system together

2

The nervous system utilizes ________ to control body functions, while the endocrine system utilizes _________ to control body functions.

neurotransmitters
hormones

3

Neurotransmitters perform their action ________ to site of release.

close

4

Hormones usually perform their action _________ from their site of release

far

5

Nervous system acts upon _________.

muscle cells, glands and other neurons

6

The endocrine system acts upon ________.

virtually all cells of the body

7

In the nervous system, action typically occurs within _________ of neurotransmitter release.

milliseconds

8

In the endocrine system, action can take ________ to occur after release of hormone.

seconds to days

9

Duration of endocrine system action is _______ than duration of nervous system action.

greater

10

What are tropic hormones?

Hormones that trigger the release of other hormones

11

List functions of hormones.

Help regulate - chemical composition & volume of internal environment
- metabolism and energy balance
- contraction of smooth & cardiac muscle fibers
- glandular secretions
- some immune system activities
Control growth and development
Regulate operation of reproductive systems
Help establish circadian rhythms

12

The excess or deficiency of hormones may lead to __________ of hormone receptors.

Down/up regulation

13

Hormones can be divided into what chemical classes?

Lipid-soluble hormones and water-soluble hormones

14

List 3 lipid-soluble hormones

Steroid hormones, thyroid hormones, Nitrous Oxide

15

List 3 water-soluble hormones

Eicosanoid hormones, amine hormones, peptide hormones

16

Water-soluble hormones bind to receptors on the _________

cell membrane

17

Lipid-soluble hormones are transported in the blood by ______ and bind to receptors on ___________.

transport proteins
nuclear membrane

18

What is the permissive effect of hormones?

The action of a 2nd hormone is required for 1st hormone to take effect

19

What is the synergistic effect of hormones?

the sum of the actions of the 2 hormones is greater than either hormone individually

20

What is the antagonistic effect of hormones?

one hormone opposes the actions of another

21

What regulates hormone secretion?

signals from nervous system, chemical changes in the blood, other hormones