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Alex787 [66]
3 years ago
10

Are there any parts of the human body that get oxygen directly from the air and not from the blood?

Biology
1 answer:
DanielleElmas [232]3 years ago
7 0

Answer:

The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air.

Explanation:

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Which of the following are examples of tissue? (Select all that apply.)
Maurinko [17]

Answer:

Blood and Nerves

Explanation:

Blood is a connective tissue that has a fluid matrix, called plasma, and no fibers. Erythrocytes (red blood cells), the predominant cell type, are involved in the transport of oxygen and carbon dioxide. Also present are various leukocytes (white blood cells) involved in immune response.

Nervous tissue is one of four major classes of tissues. It is specialized tissue found in the central nervous system and the peripheral nervous system. It consists of neurons and supporting cells called neuroglia. The nervous system is responsible for the control of the body and the communication among its parts.

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Nina was almost hit by a bus. However, she is okay and her parasympathetic system is responding accordingly. It is: Please choos
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Answer:d) contracting her pupils and increasing secretion of stress hormones.

Explanation:

Peripheral nervous system consists of 3 major neuronal levels: vegetative (reticular formation and brain stem), limbic system and neocortical level. The RAS is the link between the brain and the spinal cord.

Brain stem consists of pons, medulla oblongata and mesencephalon. Brain stem is responsible for involuntary functions such as heart beat, respiration and vasomotor activity. Limbic system represents the emotional control center. It consists of thalamus, hypothalamus and pituitary gland and maintains homeostasis. Neocortical part processes sensory information and regulates emotional responses.

Autonomic nervous system (ANS) regulates visceral activities and organs (circulation, digestion, respiration and temperature). ANS has two divisions: sympathetic and parasympathetic nervous system.Parasympathetic nervous system regulates homeostasis via the release of acetylcholine (Ach). Parasympathetic nervous system is responsible for energy conservation and relaxation.

There are three stages in the stress response: immediate effects of stress, intermediate effects of stress and prolonged effects of stress.

7 0
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Question 9 of 10
arsen [322]

Answer:

B

Explanation:

a cell does NOT destroy energy

6 0
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Read 2 more answers
What are two short explained advances in biology that were made after the microscope was invented.
melisa1 [442]
Some advances is that organelles, cells, and the difference between the cells of a plant and a cell of an animal. This was an advance because not only did we discover new things but we learned how or body functions with them and how they work. Hopefully you got what you were looking for. :)
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