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Muscles 12/1/2009 7th grade Crockett Muscles Questions Notes Notes Vocabulary words Notes Notes Notes Formulas Main Ideas Notes Notes Possible Test Notes Questions Notes Notes Key Words Summary of the notes and information learned 3 Types 1. Skeletal: • They are striped or “striated” and are responsible for moving bones move. • skeletal muscle is linked to bone by bundles of collagen fibers known as tendons. • Voluntary reaction • Ex: Allow us to smile, bend our arms and legs 2. Cardiac Muscle- • They are striated and only found in the heart. • Involuntary reaction • Ex: helps the heart continue beating 3. Smooth Muscle- • They are found in the digestive organs and blood vessels • Involuntary reaction • EX: squeeze the bladder, contract blood vessels, move food through the digestive tract Tendons and Cartilage Tendon- a tough yet flexible band of fibrous tissue. The tendon is the structure in your body that connects the muscle to the bones. Cartilage- a stiff yet flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, and the knee. • Connective tissue but does not have blood vessels Ligaments • Ligaments are fibrous bands or sheets of connective tissue linking two or more bones, cartilages, or structures together • One or more ligaments provide stability to a joint during rest and movement • Excessive movements such as hyper–extension or hyper–flexion, may be restricted by ligaments. Muscle Power • You will have no longer that 10 minutes to complete the handout. • Use the word bank to fill in the paragraph and your knowledge of the activities to fill in the chart at the bottom. • When you are finished, make sure your name is on the top and turn it into your box. Integument System Questions Notes Notes Vocabulary words Notes Notes Notes Formulas Main Ideas Notes Notes Possible Test Notes Questions Notes Notes Key Words Summary of the notes and information learned Integument System • Makes up about 16% of your body weight • It contains glands, blood vessels, lymphatic vessels, nerves, and smooth muscle • Contains 2 types of sweat glands, sebaceous (oil) glands, hair, and nails Functions • Protects internal organs and tissues • Protects against infection and injury • Prevents loss of fluids • Regulates body temperature through sweat and blood flow • Remove waste from body through perspiration • Stores fat for fuel and insulation • Sensory organ with receptors for touch, pressure, pain, heat, and cold 1. Epidermis- 3 Layers • New skin cells are formed at the bottom and move to the top over approx. 2 wks to 1 month. • As new cells move up, the older continue to rise to the surface of your skin and die. • Melanin is produced in the epidermis which creates the color of your skin. • Every minute 30,000-40,000 dead skin cells are shed off the surface of your skin! 2. Dermis- • contains nerve endings, blood vessels, hair follicles, sweat glands, and oil glands. • Contains collagen and elastin which are tough and stretchy • Oil glands secrete sebum that spreads over the epidermis to keep it flexible and waterproof 3. Subcutaneous Layer • Made mostly of fat and helps your body stay warm and absorb shocks, like if you were to fall down or bang into something. • Helps hold your skin to all your tissues underneath it. BrainPop! Nails- protect the tips of the fingers and toes • Modified hair that grow from nail roots or beds. • During cell division(cell growth), root cells are filled with keratin that make them tough and plate-like. • There are no nerve endings • It takes 6 months to grow from cuticle to tip and grow faster than toenails BrainPop! • Each hair grows out of a tube in the skin called a follicle. • Every follicle has its roots way down in the subcutaneous layer and continues up through the dermis. • It is large columns of dead cells which are filled with a tough fibrous protein. • Growth is caused by a rapid cell growth at the base of the follicle and color of hair is based on how much melanin you have in your skin. • Sebum is released onto the hair giving it some shine and a little waterproofing. The Skin • Label the parts of the skin based on the word bank and complete the sentences at the bottom. • You may use the green book: page 510 • You will be given 15 minutes • Once you have finished, make sure your name is on the top and turn it in to your box. Make it a great day Mustangs!
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