Unit 1 - Introduction

Question 1

Anatomy

Answer 1

• Study of cutting things up
  Ana= up
  Tomy= cutting
• study of internal and external body structures
• relationship between body structures

Question 2

Cells

Answer 2

Bags of water with no structural integrity

Question 3

Bones

Answer 3

Act as skeleton for your body

Question 4

nervous and endocrine systems

Answer 4

Control systems that control all of the other systems by releasing hormones that tell the body what to do

Question 5

Microanatomy

Answer 5

Deals with smaller things that can be seen with a microscope
- cytology= study of cells
- histology= study of tissues (groups of cells)

Question 6

Gross anatomy

Answer 6

• studies bigger things
• visible to human eye (bones, heart, muscles, stomach)
• body cavities (cranial, thoracic, abdominal, pelvic)

Question 7

Levels of organization

Answer 7

1. Chemical level/ basic level (smallest)
2. Cellular level
3. Tissue level
4. Organ level
5. Organ system level
6. Organism (largest)

Question 8

Chemical level

Answer 8

• simplest level
• atoms (tiny building blocks of matter)
• atoms join to form molecules and proteins (ex. H2O)

Question 9

Cellular level

Answer 9

• molecules form organelles which form cells
• all cells share common functions but all vary widely in size, shape and have different chemicals in them
• cells are the basic unit of structure and functioning of the body
• all cells have chemicals but function differently
• ## shape and size of cells depends on their functions

Question 10

Tissue level

Answer 10

• group of structurally similar cells with a common function
• 4 types
  1. Epithelial: covers the bodies surface and lines its cavities (skin)
  2. Muscle: provides movement
  3. Connective: supports and protects bodies organs (bones)
  4. Nervous: provides a means of of rapid internal communication by transmitting electrical impulses

Question 11

organ level

Answer 11

• an organ is a discrete structure composed of 2 tissue types
• organ level is 2 or more tissues working together to accomplish a common purpose

Question 12

Organ system level

Answer 12

• several related organs that work together to accomplish a common purpose

Question 13

Organism level

Answer 13

• highest level of organization
• the organism level represents the sum total of all structural levels working together to keep us alive
• all systems function together to maintain life
• organisms can live without organs but not without organ systems