1. Unit 3: Animal Anatomy and physiology

2. Digestive Respiratory 3.1 Organ Systems Circulatory / Cardiovascular
The human body is structured into systems.
What systems can you think of?
Circulatory / Cardiovascular
Digestive
Respiratory

3. 3.1 Organ Systems

4. Systems made up of cells similar in shape and function that work together are called?
Tissues
Organs
Organ systems
When different type of tissues form
and work together, they are called?
Organs with related functions
(physiology) or structures(anatomy)
working together are called?

5. 3.3 Control and Coordination: The Central Nervous and endocrine systems

6. Basic Structure of a Neuron

7. Homeostasis Homios : same Stasis: standing still
Homeostasis: The maintance of a healthy balance of all chemical reactions in an organism.
What 2 organ systems are primarily responsible for maintaining homeostasis?
Nervous system and Endocrine system
How do our bodies create homeostasis?
Respond to change in numerous ways…

8. Environment Internal environment: everything inside an organisms body
External environment: everything outside an organisms body

9. Normal ranges pH
Heart Rate (HR) - 72 beats per minute or (50 – 100)
Breathing Rate – 16 – 20 breaths per min
Body temperature – 36.2 – 37.5 degrees Celsius
Body is exposed to cold – below 36.2
- Shiver
- decrease blood flow to extremities
- increase HR
Body temperature above 37.2
- increase blood flow
- relax muscles
- increase perspiration

10. Check your HR and BR Take HR for 15 sec – multiply by 4
Average –
Take BR for 30 sec – multiply by 2
Average
Temperature from Fahrenheit to Celsius

11. Homeostasis

12. Exercise, Meals and Sleep: Effects on the Body

13. Endocrine System Endocrine System: Organ system that
regulates internal environmental conditions
by secreting hormones into the bloodstream.
Special chemicals called hormones play a
major role in homeostasis:
Regulate and coordinate functions of organ systems
Hormone: a compound released by one type of cell that has an effect on other cells of the body
Glands: an organ that secretes hormones

15. Hormones secreted in the bloodstream reach all cells they only affect target cells