Midterm 1: Communication

Question 1

Maintaining homeostasis requires communication and integration among what two key control systems?

Answer 1

Endocrine and Nervous

Question 2

The bodies control systems utilizes

Answer 2

-Local & long distance signals
-Chemical & electrical signals

Question 3

Types of intracellular communication: local

Answer 3

Gap junctions
Contact-dependent (juxtacrine)
Autocrine
Paracrine

Question 4

Gap Junctions intracellular local communication

Answer 4

Direct, constant contact, electrical or chemical

Ex: the heart or digestive

Question 5

Contact-dependent (Juxtacrine) intracellular local communication

Answer 5

Contact-dependent signal b/t membrane molecules, one with receptor and one with ligand.

Ex: immune cells and endothelial cells

Question 6

Paracrine vs Autocrine intracellular local communication

Answer 6

Bind to nearby cells trigger- vs- Bind to same cell trigger

Paracrine ex: tumor cells

Question 7

Cell to cell communication long distance via endocrine cells involves?

Answer 7

Hormone eg insulin and glucagon
(Hormone cells created by endocrine into blood)

Question 8

Cell-to-cell communication via neurons (local and long)

Answer 8

Neurocrine
1.neurohormone: blood secretion
2.neurotransmitter: onto close neighbor cells using cell/blood
3.neuromodulator: modifying response of cells to change the way they respond