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Gennadij [26K]
4 years ago
14

How do the highlighted valve cusps function during a ventricular contraction?

Biology
1 answer:
Valentin [98]4 years ago
7 0

Answer:

2. They are held closed by the chordae tendineae to prevent blood from flowing back into the right atrium.

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Which of the following is an element?
Ivan

Answer:

Carbon is an element.

Explanation:

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4 years ago
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Billy is an 11-year-old boy who was admitted to hospital with dehydration. His parents said that over the last few months, he ha
mart [117]

Answer:

Billy  showed signs of type 1 diabetes.This is because,

1.His dehydration was from polyuria- excessive urination.

2. because of failure of his  pancreas to secrete insulin, for cellular utilization of glucose by beta cells-  he retains glucose in his  blood, and  lost  a lot of  glucose in his urine, thus water follow by osmosis, leading to polyuria causing dehydration.

His urge to replace lost glucose and fluids leads to great thirst polydipsia, another symptoms of type1. However, his  drop  in weight is  because, the solute concentration  of blood glucose is high due to lack  of  insulin.Therefore large amount is lost in the urine, with large volume of fluids leading to drop in  weight, and energy because cells lack glucose for biochemical reaction of energy production.

The dehydration leads to sunken eyes, loss of tissue turgor, and low fluid levels results in drop in blood pressure,-Hyportension.

Due to lack of glucose in the blood gluconeogensis sets in. Fats is converted to glucose by the liver  to supplement the lost glucose. The major by product of this reaction is a ketone-acetone. This explains the reason for the smell of acetone in his  breath.

2, The Test strip indicated large quantity of ketones. above ,3.0mmol/L .This is a confirmation of the Type 1 diabetes mellitus in Billy.As more fats molecules are broken down to glucose.

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4 0
4 years ago
Dominance hierarchies
Musya8 [376]

Answer:

The correct answer is option B. likely give dominant males and females a reproductive advantage .

Explanation:

Dominance hierarchy is a social hierarchy in which members of a group of animals interact with each other to form a ranking system or superiority and inferiority of the organism. In such social groups, members have to compete for access for the food and resources which are limited.

Mating is also decided on the basis of the dominance of males and females in such social groups. Dominant male-female have always advantage for mating in comparison to lower members in the ranking.

For instance, female baboon mated to a dominant male or high ranked male so she can get high rank as well for the time of period.

Thus, the correct answer is option B.  likely give dominant males and females a reproductive advantage .

4 0
3 years ago
1. Based on the image above, how would<br> planting trees affect the carbon cycle?
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Answer:

I dont see the image please show the image so I can help

4 0
3 years ago
The process in which 2 paramecium join to exchange DNA is called___
Nat2105 [25]
Conjugation. hope this helps you out!
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4 years ago
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