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Rama09 [41]
3 years ago
6

Cardiac output is dependent on

Biology
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0

Cardiac Output. Cardiac Output (CO) is the amount of blood pumped by the heart per unit of time and it depends on 2 important variables like below, Stroke Volume (SV) = the amount of blood ejected per beat of the heart (Normally, 70 ml/beat). Heart rate (HR) = heart beats per minute (normally, 70 beats/min).

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What do the testes and ovaries produce to develop male and female characteristics?
il63 [147K]

Answer:

Testes and ovaries produce  two types of hormones:

androgens (male sex hormones)

estrogens (female full hormones)

In each type of gland, both types of hormones are secreted only in different amounts: the ovaries secrete more estrogen than the androgen hormones, and the sperm inversely.

Explanation:

In testicular tissue, Leydig cells produce androgen hormones: androsterone and testosterone. The ovaries produce a group of estrogen hormones and progesterone. These hormones exert their effect at puberty when the glands are activated. At puberty, the pituitary gonadostimulins activate the sex glands, whose activity leads to the development of secondary sex characteristics (the appearance of first menstruation in girls, beards and mustaches in boys, etc.).

6 0
3 years ago
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Nadusha1986 [10]
A, An ancestor of whales had legs. Hope i helped! :D
6 0
3 years ago
Researchers are investigating the incidence of algal blooms in neighborhood ponds. In summer, they collect water samples from ov
ValentinkaMS [17]

Answer: c. Lawn fertilizer that washes into neighborhood ponds likely causes algae to become more abundant.

Explanation:

Eutrophication is a natural phenomena in which the algal growth occurs in the water body due to increase in concentration of the fertilizers and manures being drained from the agricultural land into water. This causes decrease in oxygen level in water, and the aquatic animals in water will not survive due to scarcity of water.

According to the given situation, the growth of algae in the neighboring ponds is due to the drainage of lawn fertilizers into the neighboring ponds being washed from the lawns. This causes algae to grow abundantly in ponds.

8 0
3 years ago
How do plants help the earth
vodomira [7]
Plants produce oxygen this oxygen gas which is important part of our air is gas that plants and animals must have in order to stay alive when people breeze it's the auction that we take out of the air into our cells and blood is there taking into the alveoli and this is where gas exchange takes place all the o2 available for living organisms come from plants
8 0
3 years ago
GIVING BRAINLIEST how big is the earth like around the earth?
Marina86 [1]

Answer:

The correct answer to this question would be 196.9 million miles squared.

Explanation:

The Earth's surface area is equal to 196.9 million mi^2. That is A LOT. I hope this helps :)

8 0
3 years ago
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