Define the follwing with examples:

1.Merocrine secretion

2.Apocrine secretion

3.Holocrine secretion

Asked by pb_ckt | 23rd Apr, 2019, 09:09: PM

Expert Answer:

1. Merocrine secretion: A secretion in which the product is discharged through the cell membrane, the cell itself remaining intact. No part of the cell is damaged. Example- Glands of gastrointestinal tract.
 
2. Apocrine secretion: A secretion in which the apical end of the secreting cell is broken and its contents are extruded. Here some cytoplasm is partially lost. Example- Mammary gland
 
3. Holocrine secretion: A secretion in which entire cell and its constituents are extruded as part of secretory product. Example- Sebaceous glands

Answered by Sivanand Patnaik | 24th Apr, 2019, 09:33: AM