Mod1-Obj 1: Levels of human structure

Question 1

Chemical level

Answer 1

• Atoms, tiny building blocks of matter, combine to form molecules
• Molecules combine to form macromolecules

Question 2

Cellular level

Answer 2

• Molecules and macromolecules associate in specific ways to form organelles
• Organelles combine to form cells
• Cells are specialised to carry out particular functions, including essential for life functions

Question 3

Tissue level

Answer 3

Tissues are group of similar cells that have a common function

• There are four basic tissue types
  1. Epithelium
  2. Muscle
  3. Connective tissue
  4. Nervous tissue

Question 4

Epithelium tissue

Answer 4

Covers the body surface and lines its cavities

Question 5

Muscle tissue

Answer 5

Provides movement

Question 6

Connective tissue

Answer 6

Supports and protects body organs

Question 7

Nervous tissue

Answer 7

Provides a means of rapid internal communication by transmitting electrical impulses

Question 8

Organ level

Answer 8

An organ is a discrete structure composed of at least two tissue types that performs a specific function for the body

Question 9

Organ system level

Answer 9

Organs that work together to accomplish a common purpose

Question 10

Organisms are grouped into 11 organ systems, what are they?

Answer 10

1. Cardiovascular system
2. Integumentary system
3. Skeletal system
4. Muscular system
5. Nervous system
6. Endocrine system
7. Lymphatic system
8. Respiratory system
9. Digestive system
10. Urinary system
11. Reproductive system

Question 11

Organism level

Answer 11

Represents the sum total of all structural levels working together to keep us alive

Question 12

Levels of human structure

Answer 12

• Chemical level
• Cellular level
• Tissue level
• Organ level
• Organ system level
• Organism level