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KonstantinChe [14]
3 years ago
8

"Explain the process of how the human circulatory system delivers blood that is rich with oxygen to all parts of the body and th

en returns the blood to the lungs and completes this cycle over and over" "Please name 5 parts of the digestive system and explain the function that play in the digestion of food in the human body."
Biology
2 answers:
bearhunter [10]3 years ago
4 0

Answer:

it goes from aorta to theungs and down to the lower extremeties and back through the heart and lungs and circulates all day

bolus

throat

tongue

upper GI

lower gi

yKpoI14uk [10]3 years ago
3 0

Answer:

The human circulatory system is involved in the pumping blood from the heart to the different parts of the body. It consists of the heart and the blood vessels.

Blood rich in oxygen from the left atrium move into the left ventricle of the heart and is pumped into the aorta, which is a very large and elastic artery. The aorta carries the oxygenated blood to the thoracic and abdominal cavities where they are supplied to all organ systems by the arterial branches from the aorta.

Tisusue metabolism in the organ systems causes low content of oxygen and high content of CO2. This blood is called deoxygenated blood and is returned to the right atrium of the heart. The blood then enters the right ventricle. It is pumped into the pulmonary trunk and arteries. The blood is then transported to the lungs where gaseous exchange occurs between the lung capillaries and the alveoli of the lungs.

The oxygenated blood is then transported to the organ systems and the cycle continues.

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Answer:

sieve-tube elements, companion cells

Explanation:

Sieve-tube elements and companion cells are responsible for the movement of photosynthes through a plant.

The sieve tube elements are shorter (almost organelle-free) living cells, placed end to end, forming the sieve tubes. Their transverse cell walls are called sieve plaques that make connections between cells and through openings called sieves establish the connection between the cytoplasm of adjacent cells.  Each sieve is coated with calose (glucose polymer), which in winter can completely clog the vessel and then dissolve in spring. When infections occur or the vessel is parasitized, it can also be clogged with callose.

Companion cells are specialized parenchymal cells, which contain all the components that exist in living cells, including the nucleus, are the cells most closely linked to the sieved tube element. The Screened Tube Element and its companion cells are related in development, are derived from the same mother cell, and have several cytoplasmic connections to each other. Due to the many connections, the potential function of the companion cells is to release substances into the sieved tube element and, when the nucleus is absent, to include information molecules, proteins and ATP. When a screened element dies, its companion cells also die, which is a demonstration of this interdependence.

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You observe that your friend has dimples. dimples result from the presence of the dominant gene d; absence of dimples is a homoz
anzhelika [568]

Answer:

DD or Dd

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Dimples is the dominant trait (D). Your friend has dimples so that means he or she should have at least one allele of the dominant trait to express that trait. So your friend would either be homozygous dominant (DD) or heterozygous dominant (Dd). Notice that there is a recessive allele in the second. Even with that present, dimples would be still expressed.

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Answer:

i believe the answer is 3

not positive though

Explanation:

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