Parafollicular/Parathyroid/Adrenal Flashcards Preview

AP2 B3 > Parafollicular/Parathyroid/Adrenal > Flashcards

Flashcards in Parafollicular/Parathyroid/Adrenal Deck (69)
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1

cells reside outside of the follicular cells but still within the thyroid

Parafollicular Cells

2

Synthesizes and secretes ____

calcitonin

Parafollicular Cells

3

High levels of serum Ca2+ and HPO42 ___ secretion

(Parafollicular cells)

stimulate

4

Low levels of serum Ca2+ and HPO42 ___ secretion

(Parafollicular cells...)

inhibit

Calcitone it down

5

The process of using/losing a substance

Resorption

Example: The breakdown of bone by osteoclasts in order to increase plasma Ca2+

6

The process of gaining something (whether for the first time or again)

Absorption/Reabsorption

Example: Osteoblasts absorbing/reabsorbing the Ca2+ from blood to build bone matrix

7

Calcitonin inhibits?

osteoclasts

8

Calcitonin increases?

osteoblasts

9

Calcitonin decreases calcium ___ in the intestines

absorption

10

Calcitonin ___ calcium loss in urine

increases

11

Four small glands attached to the posterior surface of the thyroid gland

Parathyroid Glands

("stuck" to it, not part of it)

12

Principal cells (AKA __ cells) are the functional component

(parathyroid glands)

Chief

13

These secrete parathyroid hormone (PTH)

Principal cells (AKA Chief cells)

14

High levels of serum Ca2+ ___ secretion

parathyroid hormone (PTH)

inhibit

15

Low levels of serum Ca2+ ___ secretion

parathyroid hormone (PTH)

stimulate

16

Increases osteoclasts

Parathyroid Hormone (PTH)

17

Inhibits osteoblasts

Parathyroid Hormone (PTH)

18

Increases calcium absorption in the intestines

Parathyroid Hormone (PTH)

19

Decreases calcium loss in the urine

Parathyroid Hormone (PTH)

20

Pair of flattened, pyramidal-shaped glands located superior and adjacent to the kidneys (retroperitoneal)

adrenal gland

21

Adrenal cortex-

large and peripherally located

22

smaller and centrally located

Adrenal medulla-

23

Covered by a connective tissue capsule

Highly vascularized

Adrenal gland

24

Order of adrenal layers?

152

25

Hypothalamus releases ___ which targets the anterior pituitary

corticotropin-releasing hormone (CRH)

26

Anterior pituitary produces and releases ___ in response, which has the following actions on the adrenal cortex

adrenocorticotropic hormone (ACTH)

27

mineralcorticoids are produced and secreted

Zona Glomerulus

28

glucocorticoids are produced and secreted

Zona Fasciculata

29

certain androgens are produced and secreted

Zona reticularis

30

Secretes mineralocorticoids

Affects mineral homeostasis in the body

Zona Glomerulosa

(Promotes the reabsorption of sodium in the kidneys)