Answer: c. the physical movement of air into and out of the lungs.
Explanation:
Pulmonary ventillation is also called as breathing. This is the process which involves the inhalation or physical entry of air inside the lungs this process is called as inspiration. And the flow out of air out of the lungs is called as exhalation. The flow of air creates a pressure difference between the atmosphere and the lungs.
The most natural approach to get enough Vitamin D is through regular sun exposure. Aim for 10 to 30 minutes of midday sunshine many times per week to maintain appropriate blood levels. Those with darker complexion may require a little more.
<h3>
What is Vitamin D ?</h3>
According to the National Institutes of Health, two to three times per week, between five and thirty minutes of unprotected sun exposure to your face, arms, legs, or back between the hours of 10 a.m. and 3 p.m. is sufficient for your body to produce all of the D3 it requires. Vitamin D synthesis can be inhibited by sunscreen.
Your skin tone, age, dietary habits, and the environment in which you reside all have a role. In general, scientists believe that 5 to 15 minutes, or up to 30 minutes if you have dark skin, is approximately right to get the most benefit without endangering your health. If you wear sunscreen, you can spend more time outside and yet receive the same result.
In the continental United States, UV rays are typically highest between 10 a.m. and 4 p.m. (9 a.m. to 3 p.m. standard time). The UV Index predicts each day's UV ray intensity. Avoid overexposing your skin to the sun if your area's UV index is 3 or higher.
To know more about Vitamin D please click here : brainly.com/question/4551554
#SPJ13
About 10 because you have to strech every part of your body so you wont tear a muscle
he should not take melatonin unless recommended by a doctor and if he gets recommended to take it he shouldn't get more than 3 to 6 mg
Answer:
Most likely he has injured his <u>Calcaneal tendon</u> and the bulge is <u>triceps surae or calf muscle.</u>
Explanation:
The calcaneal tendon is the thickest tendon, which is present at the back of the lower leg and begins at the middle of the calf. It is covered with skin and fascia and connects the bones with the muscles.
The calf muscles or the triceps surae, are the muscles present in the calf of the leg.The calf muscles act via the tendon and cause flexion of the knee and the ankle.
<u>While exercising, an overuse of the calcaneal tendon, can result in pulling of the calf muscles from the Achilles tendon. Thus causing a tear in the calf muscle, which appears like a bulge.</u>
