Chapter 6: Hormones Flashcards Preview

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Flashcards in Chapter 6: Hormones Deck (14):
1

Control of Hormones

brain responds to sensory and cognitive activity--> hypothalamus produces neurohormones that stimulate the pituitary gland--> PG secretes "releasing" hormones--> PG hormones influence endocrine glands to release hormones--> hormones act on the body--> send feedback for the need of more/less

2

Hormone Receptors

almost every neuron contains hormone receptors

3

Steroid Hormones

testosterone and cortisol; syntehsized from cholesterol and are lipid soluble; act on cells DNA to increase or decrease protein production

4

Peptide Hormones

insulin, growth hormone, endorphins; synthesized by cellular DNA; bind to metabolic receptors-->second messengers--> affect on cell's physiology

5

Peptide and Steroid Functional Groups

Homeostatic, Gonadal (sex), Glucocorticoids

6

Peptide Hormone

one of a group of hormones that maintain internal metabolic balance and regulate physiological system in an organism

7

Gonadal (sex) hormone

one of a group of hormones, such as testosterone, that control reproductive functions and bestow sexual appearance and identity as male or female

8

Glucocorticoid

one of a group of steroid hormones, such as cortisol, secreted in times of stress; important in protein and carbohydrate metabolism

9

Organizational Hypothesis

proposal that actions of hormones in development alter tissue differentiation; Ex. testosterone masculinizes the brain

10

Anabolic Steroid

belongs to a class of synthetic hormones related to testosterone that have both muscle-building (anabolic) and masculinizing (androgenic) effects

11

Can hormones effect cognitive function?

Yes

12

Cortisol

turns off all bodily systems not immediately required to deal with a stressor

13

Ending Stress response

hippocampus has a high density of cortisol receptors and axons to the hypothalamus. Can signal to the hypothalamus to reduce blood-cortisol levels

14

Cortisol and Hippocampus

prolonged exposure to cortisol may damage the hippocampus--> impaired memory and PTSD