All categories

3 years ago

There are over 600 muscles in the human body, the muscular system has many

1 answer:

7 0

Answer: Some main functions of the muscular system are mobility, stability, posture, circulation, respiration, digestion, urination, childbirth, vision, organ protection, and temperature regulation.

Explanation:

1. Mobility: The muscular system’s main function is to allow movement. When muscles contract, they contribute to gross and fine movement. (Gross movement refers to large, coordinated motions like walking, running, and swimming.

2. Stability: Muscle tendons stretch over joints and contribute to joint stability. Muscle tendons in the knee joint and the shoulder joint are crucial in stabilization.

3. Posture: Skeletal muscles help keep the body in the correct position when someone is sitting or standing. This is known as posture.

4. Circulation: The heart is a muscle that pumps blood throughout the body. The movement of the heart is outside of conscious control, and it contracts automatically when stimulated by electrical signals.

5. Respiration: Breathing involves the use of the diaphragm muscle.

6: Digestion: Smooth muscles in the gastrointestinal or GI tract control digestion. The GI tract stretches from the mouth to the anus.

7: Urination: The urinary system comprises both smooth and skeletal muscles.

8: Childbirth: Smooth muscles in the uterus expand and contract during childbirth. These movements push the baby through the vagina. Also, the pelvic floor muscles help to guide the baby’s head down the birth canal.

9: Vision: Six skeletal muscles around the eye control its movements. These muscles work quickly and precisely.

10: Organ Protection: Muscles in the torso protect the internal organs at the front, sides, and back of the body. The bones of the spine and the ribs provide further protection. Muscles also protect the bones and organs by absorbing shock and reducing friction in the joints.

11. Temperature Regulation: Maintaining normal body temperature is an important function of the muscular system. Almost 85 percent of the heat a person generates in their body comes from contracting muscles.

Have a nice day!

You might be interested in

Which of the following characteristics does not describe someone who is health literate?

RSB [31]

Hopefully that helps you out

4 0

3 years ago

The question is why are the effects so different between the two injuries? Help me please

noname [10]

Answer:

The difference between the effects of a spinal injury at C3 and one at T3 is due to the fact that the segment of the spinal cord affected, and the functions it controls, are different.

Explanation:

From the spinal cord originate the spinal nerves, which are responsible for controlling both sensory and motor nerve functions.

Each segment of the spinal cord controls a group of specific motor and sensory nerves, known as myotomes and dermatomes.

Vertebral injuries can cause spinal cord inflammation or permanent spinal cord damage. The involvement of a segment of the spinal cord can be evidenced by

Sensory level: which is the lowest level of sensory function that remains intact.
Motor level: the lowest level in which motor activity remains functional.

The difference between a C3 and T3 lesion is that the cervical lesion affects the dermatome and myotome that control this segment, in addition to all those below it. On the other hand, a T3 lesion can affect this dermatome and myotome, in addition to the lower ones, but the functions above the lesion will not be affected.

- A vertebral injury in C3 —third thoracic vertebra— is very high —sensory and motor level with response maintained on the neck— and produces a failure of almost all the peripheral nerves, with paralysis from the neck down. This includes breathing and control of the diagphragm (breathing) and the four limbs.

- Injuries in T3 —third thoracic vertebra— the motor and sensory level is lower, allowing movement of arms and breathing, but with paralysis of part of the trunk, lower extremities and control of the bowel and urinary bladder.

6 0

3 years ago

What are the odds of nonsmokers developing cardiovascular disease when compared to smokers?

Paraphin [41]

Non-smokers are half as likely to develop cardiovascular disease as compared to smokers.

Further Explanation:

In the United States, half of the death occurred due to smoking. Now a day’s cigarette smoking is a major reason behind cardiovascular disease or lungs problem. Atherosclerosis is a disease in which the lining of the arteries weaken, the wall becomes thicken and fat is deposited. This disease is mainly developed due to cigarette smoking.

In smoker blood supply from arteries to the heart is very less and they are highly prone to heart attack. In non-smokers, oxygen-rich and clean air is breathing and small dust particulate can trap by cilia. In smokers, cigarette smoke consist many harmful chemicals. These harmful substances can cause inflammation on the lungs and leads to the overproduction of the mucus. Because of this bronchitis, cough, pneumonia, and asthma attacks develop in smokers. That’s why smokers are at very high risk of cardiovascular disease than non-smokers.

Learn more:

Learn more about mitosis brainly.com/question/6462270
Learn more about the menstrual cycle brainly.com/question/723944
Learn more about meiosis brainly.com/question/94813

Answer Details:

Grade: High School

Subject: Biology

Topic: Smoking

Keywords:

Smoker, non-smoker, cough, pneumonia, mucus, arteries, lungs, cigarette, atherosclerosis, fat, thicken, clean, air, inflammation, oxygen, wall.

7 0

4 years ago

Read 2 more answers

The four basic food groups are a guideline to help ensure that:

shusha [124]

I think it’s C but i’m not completely sure but C makes the most sense!

8 0

2 years ago

Lucille has been told she needs to improve her heart health, and she is ready to get started . There are many activities she is

Rina8888 [55]

The correct answer for the given situation above would be option A. The best time for her to begin gathering data in order to calculate her target heart rate zone would be, when she is resting. You need to do this for several days in a row for a consistent reading and is usually done before getting out of bed in the morning.

5 0

3 years ago