_____ phase is the period during the life of a cell between the end of mitosis and the synthesis of more genetic material.

1 answer:

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Ans: G1 phase Explanation: Preparation of a newborn division happens in three steps: G1 phase, G2 phase and S phase. In G1 phase, the cell grows physically larger, copies organelles, and makes the molecular building blocks it will need in later steps. mitosis is the process in which the nuclear DNA of the cell condenses into visible chromosomes and is pulled apart by the mitotic spindle, a specialized structure made out of microtubules.

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Atherosclerotic peripheral vascular disease is symptomatic with at least 50% occlusion. the primary peripheral symptom, due to i

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Atherosclerotic peripheral vascular disease is symptomatic with at least 50% occlusion. The primary peripheral symptom, due to ischemia, is calf pain.
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Describe pulmonary circulation pathway using the following terms: deoxygenated blood, left atrium, lungs, oxygenated blood, pulm

ehidna [41]

Definition:
"The type of circulation pathway in which venous blood is passed
from the right atrium of the heart through the right ventricle and
 pulmonary arteries to the lungs where it is oxygenated and its return via the pulmonary veins to enter the left auricle and participate in the systemic circulation".

Explanation:
There are two circulatory path in cardiovascular system namely pulmonary circulation and systemic circulation. Pulmonary circulation path allows for blood circulation through lungs for oxygenation while systemic circulation allows for transport of oxygenated blood to all parts of the body.

Pulmonary Circulation Pathway:
Pulmonary circulation pathway consist of:

1. Superior and inferior vena cava:
De-oxygenated blood from lower parts of the body enter to right atrium through inferior vena cava. Similary, deoxygenated blood from upper parts of the body enter to right atrium through superior vena cava.

2. Right atrium and right ventricle:
From right atrium the blood passes to right ventricle through tricuspid valve.

 3. Pulmonary artery:
Afterwards, the blood enters the pulmonary artery via the pulmonary valve. The pulmonary artery divides into two arteries with one artery entering the right lung and the other artery entering the left lung. When the blood reaches the lungs through the left and right pulmonary arteries, it moves over alveoli via the capillary beds. 

4. Left atrium and left ventricle:
After the blood gets oxygenated, it moves back to the heart and this time moves into the left atrium, completing the pulmonary circulation path.