Answer:
The left ventricle pumps blood through the aortic valve and into the aorta.
Explanation:
Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body's tissues through the aorta.
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Answer:
Normal vital sign ranges for the average healthy adult while resting are:Blood pressure: 90/60 mm Hg to 120/80 mm Hg.Breathing: 12 to 18 breaths per minute.Pulse: 60 to 100 beats per minute.Temperature: 97.8°F to 99.1°F (36.5°C to 37.3°C); average 98.6°F (37°C)
Explanation:
Langerhans cells are dendritic cells (antigen-presenting immune cells) of the skin, and contain organelles called Birbeck granules. They are present in all layers of the epidermis and are most prominent in the stratum spinosum.