Intermediate Zona Fasciculata Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. What separates the cords of zona fasciculata cells?
- Collecting ducts
- Cartilage plates
- Lymphoid follicles
- Sinusoidal capillaries
Q2. Which organelle is especially abundant in zona fasciculata cells because of their steroidogenic function?
- Cilia
- Myofibrils
- Rough endoplasmic reticulum only
- Smooth endoplasmic reticulum
Q3. What mitochondrial feature is characteristic of steroid-producing zona fasciculata cells?
- No cristae
- Internal cartilage septa
- Only flat lamellar cristae typical of many nonsteroidogenic cells
- Tubular or vesicular cristae
Q4. What is stored in the abundant cytoplasmic droplets of zona fasciculata cells?
- Bile pigments
- Glycosaminoglycans only
- Catecholamines
- Cholesterol and cholesterol esters
Q5. Which hypothalamic-pituitary pathway regulates zona fasciculata cortisol production?
- ADH-oxytocin axis
- GnRH-LH axis only
- CRH-ACTH axis
- TRH-TSH axis
Q6. Which receptor mediates the principal action of ACTH on zona fasciculata cells?
- Melanocortin 2 receptor
- Insulin receptor
- Nicotinic acetylcholine receptor
- Beta-1 adrenergic receptor
Q7. Which intracellular signaling pathway is activated prominently by ACTH in zona fasciculata cells?
- Nuclear thyroid receptor signaling
- IP3 pathway exclusively through muscarinic receptors
- Voltage-gated sodium channels only
- cAMP and protein kinase A pathway
Q8. What is the direction of blood flow through cortical sinusoids associated with the zona fasciculata?
- From the central vein directly to the capsule
- From the renal pelvis into the cortex
- From the medulla outward only
- From the outer cortex inward toward the medulla
Q9. How does ACTH support the structure of the zona fasciculata in addition to stimulating secretion?
- It removes all intracellular lipid
- It blocks cortical blood flow
- It converts fasciculata cells into chromaffin cells
- It provides trophic support to cortical cells
Q10. Which adrenal cortical zone lies immediately deep to the zona fasciculata?
- Zona glomerulosa
- Zona reticularis
- Renal cortex
- Adrenal capsule