Chapter 3 - Tissues And Early Embryology

Question 1

What are the main types of tissues ?

Answer 1

Epithelial, Connective, Muscle, Nervous

Question 2

Epithelium

Answer 2

Sheet of cells that cover a body surface or line a body cavity

Function : protection, sensory reception, secretion, absorption, and ion transport

Question 3

Special Characteristic of Epithelia

Answer 3

• Cellularity : made of tightly bound cells with little to no ICF
• Avascular : contains no blood vessels

Question 4

Microvilli

Answer 4

Increase epithelial surface area; may anchor sheets of mucus

Question 5

Stereocilia

Answer 5

Very long microvilli that cannot move

Question 6

Basal Lamina

Answer 6

Sheet of proteins, acts as a filter and regenerates epithelial cells

Question 7

Simple cells

Answer 7

One layer of cells

Question 8

Stratified

Answer 8

2 or more layers of cells

Question 9

Exocrine

Answer 9

Release into ducts

• produce serous glands
• mucous glands
• mixed exocrine glands

Question 10

Endocrine

Answer 10

• ductless glands released by Exocytosis

- hormones

Question 11

Eccrine secretions

Answer 11

Packaged into secretory vesicles , released into Exocytosis

Question 12

Apocrine secretions

Answer 12

Released during shedding of apical portion cell’s cytoplasm

Question 13

Holocrine

Answer 13

• Destroys the gland cells

- the cell is packed and then bursts apart