Question

directions in the space provided, write the letter of the choice that best completes the statement or answers the question. 1. what type of muscles are in the lining of blood vessels? a. fiber muscles b. smooth muscles c. striated muscles d. cardiac muscles 2. the muscle that closes a joint is the a. extensor. c. flexor. b. fiber. d. smooth. 3. muscle tone is a. the natural tension in the fibers of muscles. b. a type of muscle that forms the wall of the heart. c. an inherited disorder in which muscle fibers are destroyed. d. the inflammation of a tendon. 4. which is not a tip for caring for the muscular system? a. get regular exercise. b. use proper equipment during physical activity. c. practice good posture. d. eat foods that are low in protein. 5. which problem of the muscular system results when muscles are stretched or partially torn from overexertion? a. muscle bruise c. hernia b. muscle sprain d. muscular dystrophy ii. directions write a plus (+) in the space provided if the statement is true. if the statement is false, cross out the underlined word or phrase and write the correct word or phrase in the space provided. 6. a muscle is made up of long cells called muscle fibers. 7. muscles attached to the bone that cause body movements are cardiac muscles. 8. when two muscles work together to produce movement, the muscle that opens a joint is called the extensor. 9. a(n) hernia occurs when an organ or tissue protrudes through an area of weak muscle. 10. muscular dystrophy is the inflammation of a tendon.

Explanation:

1. Blood vessels are lined with smooth muscles which are involuntary and help in regulating blood - vessel diameter.
2. Flexor muscles close a joint by decreasing the angle between the bones of the joint.
3. Muscle tone is the natural tension in muscle fibers, which helps maintain posture and readiness for movement.
4. Eating foods low in protein is not good for the muscular system as protein is essential for muscle repair and growth. Regular exercise, proper equipment use, and good posture are beneficial for the muscular system.
5. A muscle sprain occurs when muscles are stretched or partially torn due to overexertion.
6. A muscle is made up of long cells called muscle fibers, so this statement is true.
7. Muscles attached to the bone that cause body movements are skeletal muscles, not cardiac muscles. Cardiac muscles are found in the heart.
8. When two muscles work together to produce movement, the muscle that opens a joint is called the extensor, so this statement is true.
9. A hernia occurs when an organ or tissue protrudes through an area of weak muscle, so this statement is true.
10. Tendinitis is the inflammation of a tendon. Muscular dystrophy is a group of inherited diseases characterized by muscle weakness and wasting.

Answer:

1. b. Smooth muscles
2. c. flexor
3. a. the natural tension in the fibers of muscles
4. d. Eat foods that are low in protein
5. b. Muscle sprain
6. +
7. Cross - out "cardiac muscles", write "skeletal muscles"
8. +
9. +
10. Cross - out "Muscular dystrophy", write "Tendinitis"