The what system protects internal organs from harmful bacteria, sunlight, and injury.

When you are lifting weights or engaging in other kinds of exercise that target specific muscle groups, the primary focus is on

Hunter-Best [27]

Answer:

I think that it is A. Smooth Muscles but i could be wrong

Explanation:

Smooth muscle, also called involuntary muscle, muscle that shows no cross stripes under microscopic magnification. It consists of narrow spindle-shaped cells with a single, centrally located nucleus. Smooth muscle tissue, unlike striated muscle, contracts slowly and automatically. (Found on g o o g l e)

Cardiac muscle (or myocardium) makes up the thick middle layer of the heart. It is one of three types of muscle in the body, along with skeletal and smooth muscle. The myocardium is surrounded by a thin outer layer called the epicardium (AKA visceral pericardium) and an inner endocardium.

Skeletal muscles are attached to bones by tendons, and they produce all the movements of body parts in relation to each other. Unlike smooth muscle and cardiac muscle, skeletal muscle is under voluntary control.

5 0

3 years ago

Seafood is an excellent source of vitamin C.<br><br> True<br> False

ivolga24 [154]

False it is not an excellent source of vitamin C

8 0

3 years ago

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Explain the characteristics of earth

Sever21 [200]

Earth is approximately spherical in shape like all planets and stars. Earth is composed mostly of rock. Three-fourths of its surface is covered by a relatively thin layer of water (some of it frozen), and the entire planet is surrounded by a relatively thin blanket of air.

3 0

2 years ago

What diagnosis involves an abnormal collection of blood

Musya8 [376]

Angina, I believe. It's around the brain

3 0

3 years ago

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According to the organization Zero to Three, which of the following is not a benefit of providing predictable schedules and rout

galina1969 [7]