Endocrine

Question 1

Endocrinology

Answer 1

Study of hormones and endocrine organs

Question 2

Endocrine glands

Answer 2

Produce hormones
Lack ducts
Examples: pituitary, thyroid, parathyroid, adrenal and pineal glands

Question 3

Neuroendocrine organ

Answer 3

Hypothalamus

Question 4

Exocrine and endocrine functions

Answer 4

Pancreas, gonads, placenta

Question 5

Hormones

Answer 5

Long-distance chemical signals;travel in blood or lymph

Question 6

Autocrines

Answer 6

Chemicals that exert effects on the same cells that secrete them

Question 7

Paracrines

Answer 7

Locally acting chemicals that affect cells other than those that secrete them

Question 8

Two main classes of hormones

Answer 8

Amino acid-based hormones
and steroids

Question 9

Eicosandoids

Answer 9

Possible third class of hormone

Question 10

Target cells

Answer 10

Tissues with receptors for a specific hormone

Question 11

Water soluble hormones

Answer 11

(all amino acid-based hormones except thyroid hormone)
Act on plasma membrane receptors
Act via G protein second messengers
Cannot enter cell

Question 12

Lipid soluble hormones

Answer 12

(steroid and thyroid hormones)
Act on intracellular receptors that directly activate genes
Can enter cell

Question 13

Blood levels of hormones are controlled by

Answer 13

Negative feedback systems.
-increased hormone effects on target organs can inhibit further hormone release

Question 14

Hormone release is triggered by

Answer 14

Endocrine gland stimuli and
nervous system modulation

Question 15

Hormonal stimuli

Answer 15

Hormone release caused by altered levels of certain critical ions or nutrients

Question 16

Neural stimuli

Answer 16

Hormone release caused by neural input

Question 17

Hormonal stimuli

Answer 17

Hormone release caused by another hormone (a tropic hormone)

Question 18

Nervous system modulation

Answer 18

The nervous system can make adjustments to hormone levels when needed and override normal endocrine controls