Anatomy Of Adrenal Flashcards

1
Q

What are the three layers of adrenal cortex?

A

1) Zona glomerulosa
2) Zona Fasciculata
3) Zona reticularis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Histology of Zona glomerulosa

A

1) Columnar with dense nuclei
2) Abundant sER, mitochondria, and few lipid droplets
3) Has glomeruli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Histology of zona fasciculata

A

1) Polyhedral with pale nuclei
2) Cytoplasm has many lipid vacuoles (spongicytes)
3) numerous sER, mitochondria, has more lipid droplets
4) rich in Cholesterol and vitamin c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where are chromaffin cells located and what do they do ?

A

In the adrenal medulla, they secrete catecholamines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What stimulates the secretory activity of adrenal medulla?

A

The sympathetic multipolar nerve cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Tell me about the granules present in chromaffin cells?

A

Chromaffin granules: they appear brown after staining with chromium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Differentiate between Epinephrine and norepinephrine secreting chromaffin cells

A

1) EN: homogeneous granules
2)NEN: granules with electron-dense centre and peripheral halo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Functions of Zona glomerulosa

A

Secretes Aldosterone (not controlled by ACTH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Function of Zona Fasciculata

A

Secretes cortisol in response to ACTH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Function of Zona reticularis

A

Secretes sex hormones in response to ACTH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Function of adrenal medulla

A

Secretes Epinephrine and norepinephrine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the origin of adrenal medulla?

A

Ectoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which adrenal layer is essential for life?

A

Cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are diseases related to adrenal gland?

A

Addison’s (decrease production of adrenocorticoids due to destruction)
Cushing’s (pituitary adenoma causing increased ACTH—> increased cortisol)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly