Endocrine

Question 0

Pancreatic islets

Answer 0

Islets of Langerhans

A-cells: Glucagon ➡️✳️glycogenolysis:⬆️ blood glucose

B-cells: Insulin➡️✳️glycogen storage in liver & skM: ⬇️b. Glucose

D-cells: Somatostatin:⛔️glucagon rel & ⬇️ pancreatic exo secr (OPP of CCK)

F-cells: Pancr Polypeptide:
⛔️HCO3 & Enz secr (OPP of Secretin)
✳️relax gall bladder &⬇️bile secr (OPP of CCK)

Question 1

Pineal gl

Answer 1

Epiphysis cerebri: Dien
SNS from Cr Cervical ggl

Pinealocyte & glial & corpora arenacea

MELATONIN➡️✳️or⛔️ FSH & LH

Question 2

Adrenal gl: layers

Answer 2

Cortex:
Zona Glomerulosa/Arcuata: SER & tub cristae
Z. Fasciculata
Z. Reticularis

Medulla (SNS): Ach➡️✳️chromaffin cells: secr E & NE

Question 3

Z. Arcuata

Answer 3

NOT PITU REG

Mineralcorticoids
Ang II: ✳️ZA➡️ secr ALDO

Question 4

Z. Fasciculata

Answer 4

Glucocorticoids (cortisol)

Pitu: ACTH➡️ ✳️ZF: secr GCC

Question 5

Z. Reticularis

Answer 5

Androgens & Cortisol

Pitu: ACTH➡️✳️ZR: secr Androgens

Question 6

Parathyroid

Answer 6

Endoderm
Principal cells:
LOW [Ca]➡️ rel PTH➡️✳️osteoclasts
⬆️[Ca]abs & ⬇️[Ca] urine excr& ⬇️P reabs

Oxyphil cells: MT bag