1. Chapter 5
System Overview

2. Integumentary System Functions: Structures: skin (integument)
Covers the surface of the body
Protective barrier : microorganisms, fluid loss, maintain internal temp.
Excretes wastes
****Homeostasis
Structures: skin (integument)
Skin has 2 layers: epidermis (superficial) and dermis (deep)
Below is layer of fat (hypodermis) which anchors skin to underlying structures

3. Parts to Label:

4. Skeletal System Functions: support of tissues
protection of internal organs
storage of mineral salts
site for blood cell formation
Structures: bones, joints and tissue connecting them
206 bones in human body
Axial skeleton: head, trunk
Appendicular skeleton: arms, legs

5. Things to Know:

6. Muscular System
Functions: body movement, posture, form support of skeleton, maintaining body temp (homeostasis)
Structures: muscles and tissues

7. Things to Know

8. Nervous System Functions: communication between body and environment
Structures: brain, ,spinal cord and nerves
CNS: central nervous system (brain/spinal cord)
PNS: peripheral nervous system (nerves branching off)

9. Endocrine System:
Functions: secretes things, usually hormones, into bloodstream
Structures: glands that do not contain duct, pituitary, thyroid, parathyroid, adrenal, gonads, pancreas thymus, stomach, kidney,

10. Cardiovascular System
Functions: move material through body, waste, nutrients, blood
Structures: blood vessels, heart, capillaries

11. Things to Know:

12. Lymphatic System
Function: carry fluid throughout body (one-direction, towards heart)
Structures:
Lymph: yellow, watery fluid that contains NO RBC or platelets
Lymph vessels/nodes:
Spleen
Thymus gland
Tonsils