21. Secretory Vesicles

Question 1

Structure of secretory vesicles
What is the shape of secretory vesicles? What are they coated with? Are they membranous? What is the core of secretory vesicles filled with?

Answer 1

Their shape is spherical. It’s coated with a protein called clathrin. They are membranous. It’s core is filled with histamine, chromogranin B and secretogranin 2

Question 2

What are some types of secretory vesicles?

What’s is function?

Answer 2

Zymogen granules that secrete digestive enzymes. Synaptic vesicles that secrete transmitters. Neurosecretosomes that secrete hormones.

Is function is to mediate vesicular transport of cargo from one organelle to where it’s needed.