Tissues and Intercellular Communication

Question 1

Tissue types (4)

Answer 1

Epithelial
Connective
Nervous
Muscle

Question 2

Endocrine cell communication

Answer 2

-Hormone signaling via bloodstream, and then bind to receptors on cell surface of inside the cell

Question 3

Second messenger systems

Answer 3

Water soluble hormones or signaling molecules bind to membrane receptors on external side of plasma memb.
-Initiates a cascade of events, mostly, which will eventually stimulate target response

Question 4

Typical example of a common secondary messenger system!

Answer 4

G-proteins and GCPR’s (G protein coupled receptors)

Question 5

Paracrine cell communication

–typical example of paracrine cell communication

Answer 5

Cell releases a signal molecule that, upon exit of the cell, will bind to a specific membrane receptor of nearby cells.

–NT diffusing across synaptic cleft acting on a postsynaptic cell

Question 6

Autocrine

Answer 6

A cell releases a signaling molecule that binds to the receptors on the same cell that released it.

Question 7

Intracrine

Answer 7

A signal molecule (which is normally a steroid) binds to receptors on the inside of the same cell that produced it, without it ever leaving that cell.

Question 8

Juxtacrine

Answer 8

In order for signaling to occur, the cells need to be in direct contact with each other.