Overview of Physiology/ Body systems

Question 1

Levels of Organization

Answer 1

atoms->molecules->macromolecules->organelles->cell->tissue->organ->system of organs->organism

Question 2

Four basic tissues in the human body

Answer 2

epithelial, muscle, connective, nervous

Question 3

Epithelial Tissue

Answer 3

1. covers body surfaces
2. lines body cavities
3. can be found in many layers or one layer
4. the cells that make up epithelial tissue are specialized for secretion and absorption
5. the structure of epithelial tissue is made up of closely packed cells w/ very little matrix
6. cells are under constant cell division to replace dead cells that shed away

Question 4

Muscle Tissue

Answer 4

1. enables us to move

2. the cells that make up muscle tissue are specialized for muscle contraction

Question 5

Connective Tissue

Answer 5

1. offers support and protection of internal organs
2. includes bones, blood, ligaments, and tendons
3. the cells that make up connective tissue are specialized for binding tissues together and play a supportive role

Question 6

Nervous Tissue

Answer 6

1. responsible for the communication between the cells of the body
2. by forming systems of electrical impulses that communicate very rapidly

Question 7

Integumentary System

Answer 7

Skin- epidermis (outer layer)
dermis- middle layer
hypodermis/subcutaneous layer- inner layer

Question 8

The hypodermis/subcutaneous layer

Answer 8

made mostly of fat, helps anchor the dermis to a layer of fat cells

Question 9

Adipocytes

Answer 9

are fat cells that help to insulate and regulate body temperature

Question 10

Skin

Answer 10

1. forms the external covering the protects the deeper tissue layer from injury
2. plays an important role in protecting internal organs from extreme temperature changes
3. sweat glands and oil glands found in skin

Question 11

Integumentary systems produces…

Answer 11

vitamin D and contains the pressure/pain receptors used in our protection