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irina [24]
3 years ago
13

Precapillary sphinctersa. serve as valves in veins. b. are found in the tunica media. c. carry blood under high pressure. d. con

trol the blood flow into capillary beds. e. are voluntary structures.
Biology
1 answer:
KengaRu [80]3 years ago
3 0

Answer:

D. Control the blood flow into the capillary bed

Explanation:

The degree of filling of the capillary bed and level of arterial pressure within the vascular system is determined mainly by the degree of tonus (firmness) in the smooth muscle of the arterial wall. Arterioles have relatively narrow lumina, thick muscular wall and precapillary sphincter.

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alukav5142 [94]

The intermediate disturbance hypothesis predicts that species diversity will be highest  when the frequency and/or intensity of disturbances are intermediate

Explanation:

The diversity of the species is maximised at an intermediate near of anthropogenic as well as natural disturbances. As the competitively inferior disturbances are being tolerated for species disturbance and are termed to be dominant. Co exist of the sensitive species when the disturbance are either frequent or rare, which possess the reduced level of the disturbances. the productivity is predicted as very less due to competitive exclusion. As the disturbances increases productivity becomes less as most of them unable to sustain the regular destructive occurrence. So with the intermediate disturbances productivity is high as the rapid colonizers and dominant competitors are able to coexist.

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alukav5142 [94]
I learned this long ago, I think it's either Mitosis or cell division, this is when one cell divides to make 2 cells and those 2 cell divide to make 4 cells and those 4 cells divide to make 8 cells and so on.
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Ksenya-84 [330]

Answer:

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8 0
3 years ago
What can be predicted by regular patterns of the moon<br><br><br> PLS HELP ME
koban [17]

Answer:

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<span>C. bend or curve in a stream channel. 

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