Chapter 4.

Question 0

Name four types of tissues and their main functions

Answer 0

Epithelial- sheets of cells that line and cover surfaces and body cavities.
Connective- support softer part of the bodies organs.
Muscle- cells specialized to shorten or contract
Nervous- generating and transmitting electrical impulses

Question 1

Describe some advantages and disadvantages of multicellularity.

Answer 1

Advantage is greater size and the ability to seek out I maintain an environment conducive to life.

Question 2

Describe functions of the three types of cell junctions

Answer 2

Tight- seals plasma so tightly nothing can pass.
Adhesion- allow some movement for stretching and bending.
Gap- permit movement of ions or water

Question 3

Distinguish the difference between Organ and organ system

Answer 3

An organ has several tissues that join together to perform a function. An organ system is multiple organs in a group that share a bond function for survival.

Question 4

Define interstitial fluid.

Answer 4

Fluid that surrounds a nourishes single celled organisms