The Human Body

Mr. Fox’s 7th Grade Science Class

Body Setup (review)

• Cells Tissue Organs Organ System Body

Types of Tissue

• Muscle Tissue – tissue that can contract and expand. • If you ever hear a doctor saying you

have soft tissue damage, it’s usually muscle tissue.

Types of Tissue

• Nerve Tissue – tissues that send messages around your body. • Conduct electricity• Hardest tissue to repair• Your brain is made mostly of nerve

tissue.

Types of Tissue

• Connective Tissue – provides support for your body and connects all its parts. • Skeleton: Strong and supports the

body.• Fat: pads and provides insulation• Blood: goes between the tissues

delivering Oxygen and sugar.

Types of Tissue

• Epithelial Tissue – covers your body inside and out!• Skin: keeps things out of your body

that will harm it. • Digestive Track: absorbs only the

things you need to survive, and releases chemicals.

Think Pair Share

• With the person sitting next to you, take 2 minutes to explain one of the tissue types and it’s function.

Homeostasis

• The body’s tendency to maintain an internal balance.

• The process by which an organism’s internal environment is kept stable in spite of changes in the external environment.

Stress

• The reaction of your body and mind to threaten, challenging, or disturbing events.

• What happens due to stress?

Affects of Stress

• Muscles tense up• Hearing ability increases• More blood goes to the brain• Pupils in the eyes widen• Heart rate increases• Digestive system slows• Adrenaline is released

Fight or Flight

• This is the name for the response to stress. • Fight, you stay and deal with the

issue• Flight, you get away from the problem

• Adrenaline – gives you a burst of energy and causes many other changes in your body.

Long Term Stress

• Weakens the body, makes you tired, irritable, and trouble getting along with others. Also some things happen in the body as well.

Systems of the Body

• Page 21 in your book. Copy it into your notes.