Explain in detail the function of the circulatory system and why it is inportant

Answers

Answer 1

Answer: the circulatory system has the organs and tissues. it has the blood flow through the body and delivers nutrients to the organs and tissues.

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How dose an atom become an ion

Answers

An atom becomes an Ion (a) if it gains one or more electron(s) or (b) if it loses one or more electron(s). When it gains electrons it becomes negatively charged and is called an anion. When it loses electron(s) it becomes positively charged and is called a cation.

Biology students used raw eggs in an experiment on tonicity and osmosis. The students put their eggs into vinegar to remove the shells. The vinegar was used to remove the shell form the raw egg. What other effect(s) did the vinegar have on the egg?a: the vinegar solution was hypotonic , causing the egg to gain mass
b: the vinegar solution was hypotonic , causing the egg to lose mass
c: the vinegar solution was hypertonic , causing the egg to gain mass
d: the vinegar solution was isotonic to the egg so the mass remained constant

Answers

a) is the right answer

A would be the answer because the vinegar solution had a Chemical reaction with the outer shell of the egg causing the egg to swell and absorb the vinegar

Cells in the human eye send nerve impulses to the brain that cause the pupil to constrict. This is an example of a reaction to what kind of stimuli?chemicals

light

touch

sound

Answers

Cells in the human eye send nerve impulses to the brain that causes the pupil to constrict. This is an example of a reaction to the light stimuli. Thus, the correct option is B.

What stimuli control reaction of pupil?

Pupils are the part of eye which respond to three distinct kinds of stimuli which include their constriction in response to brightness of light, this is called as the pupil light response, constrict in response to near fixation which is known as the pupil near response, and dilate in response to increases in the arousal and mental efforts, either these are triggered by an external stimulus or occur spontaneously.

Light is the stimulus and the impulses in response to this reach the brain through the optic nerve and the response due to this is conveyed to the pupillary musculature through autonomic nerves which supply the eye.

Therefore, the correct option is B.

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this is a reaction to light.

When mucus collects in the tubes to the lungs it gives rise to an unpleasant rise. Name this.