1. Do Now Which type of cell (s) have a cell membrane? A) Plant Cells
B) Animal Cell
C) Both
D) Neither

2. TISSUES

3. OBJECTIVES
Students will learn about the four different types of tissues that make up organs.

4. Epithelial tissue Connective Tissue Nerve Tissue Muscle tissue
Types of Tissues
Epithelial tissue
Connective Tissue
Nerve Tissue
Muscle tissue

5. Epithelial tissue is used for protection.
It protects the body from dirt, dust and bacteria.
The skin is primarily made of Epithelial tissue!

6. Connective Tissue The body consists mostly of connective tissues.
Connective tissues protect and support the body.
Connective tissues are found in cartilage, bones, blood and lymph.

7. Muscle Tissue
There are three types of muscle tissues: skeletal, smooth and cardiac.
Skeletal is used in the contraction of skeletal parts (voluntary). An example is when you move your hands and arms.
Smooth is found in blood vessels and internal organs (involuntary).
Cardiac is found in the heart (involuntary). An example could be heartbeat.

8. Nerve Tissue
Nerve tissues allow your body to receive stimuli and conduct impulses to and from all parts of the body.
A stimuli is anything that causes you to have a reaction.
An impulse is a strong desire to act a certain way.

9. Organs

10. Organization of Your Body
There are four levels of organization, it is called a HIERARCHY.
1. Cells;
2. Tissues;
3. Organs;
4. Organ Systems. 2

11. Organization of Your Body
Organs: are combinations of different tissues that form a structural and functional UNIT.
Any organ that is essential to life is called a vital organ.
Examples:
Heart - Pumps blood throughout the body.
Liver - Removes toxins from the blood, produces chemicals that help in digestion.
Lungs - Supplies oxygen to the blood and removes CO from blood.
Brain - The control center of the body. 4

12. Organization of Your Body
Organ systems: are groups of organs that cooperate to perform the major activities of the body.
Your digestive system is an organ system:
It contains your mouth, esophagus, stomach, small and large intestines, and liver.
Digestion breaks down food and absorbs nutrients you need to live.

13. The 11 human body systems are as follows:
-- nervous system -- integumentary system
-- respiratory system -- digestive system
-- excretory system -- skeletal system
-- muscular system -- circulatory system
-- endocrine system -- reproductive system
-- lymphatic (immune) system

14. Cells, Tissues, Organs, and Systems
A cell is the smallest unit of living matter; the building blocks of living things.
Tissues are groups of cells working together to perform a certain job.
Organs are groups of tissues that perform a certain function.
Organs working together to carry out a certain life function are an organ system.

15. Homeostasis
As animals have evolved, specialization of body structures has increased
For cells to function efficiently and interact properly, internal body conditions must be relatively constant
-The dynamic constancy of the internal environment is called homeostasis
-It is essential for life 55

16. Homeostasis
Humans have set points for body temperature, blood glucose concentrations, electrolyte (ion) concentration, tendon tension, etc.
We are endothermic: can maintain a relatively constant body temperature (37oC or 98.6oF)
-Changes in body temperature are detected by the hypothalamus in the brain 56