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Ray Of Light [21]
3 years ago
13

As blood enters the ____________ , the walls of these vessels expand and contract, which can be felt as the pulse where the ____

________ run close to the body surface.
*It is common to detect the pulse with a few fingers placed on the ____________ on the wrist, or the ____________ in the neck.

*Because the walls of the ____________ pulse whenever the left ventricle contracts, the pulse rate generally indicates the ____________ , which is normally between ____________ in a healthy adult.
Biology
1 answer:
solniwko [45]3 years ago
7 0

As blood enters the artery, the walls of these vessels expand and contract, which can be felt as the pulse where the arteries run close to the body surface.

It is common to detect the pulse with a few fingers placed on the radial artery on the wrist, or the carotid artery in the neck.

Because the walls of the arteries pulse whenever the left ventricle contracts, the pulse rate generally indicates the cardiac function, which is normally between 50 and 85 in a healthy adult.

Pulse is usually defined as the rhythmic dilation of the arteries due to flow of the blood caused by heart contractions. The measurement of the pulse rate can be used for the diagnosis of  serious disease such as cardiac disease.

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2. Why is chromatography useful?
Gennadij [26K]

Answer:

In many instances, we can separate these materials by dissolving them in an appropriate liquid and allowing them to move through an absorbent matrix, like paper. Chromatography is a method used by scientists for separating organic and inorganic compounds so that they can be analyzed and studied.

Explanation:

6 0
4 years ago
In humans, red-green color blindness is determined by an X-linked recessive allele (a), whereas eye color is determined by an au
matrenka [14]

Answer:

Mother - bb XAXa

Father -  Bb XAY

Son - Bb XaY

Daughter - bb XAXa

Explanation:

Given –  

Mother has blue-eye and normal vision

Son  has brown eye and is color blind

Let the allele for Blue eye be represented by “b” and the allele for brown eye be represented by “B”

Given brown (B) is dominant over blue (b), thus both BB and Bb represents brown color eyes

Color blindness is associated with X gene

Thus Xa represents  X –linked recessive colorblindness

And XA represents normal vision

Genotype of blue-eye and normal vision mother is bb XAXa . Mother is the carrier of recessive allele Xa for color blindness

Since son is color blind , his genotype would be Bb XaY

So fathers genotype would be  

Bb XAY

Daughters genotype bb XAXa

4 0
3 years ago
Draw a line from each hormone in list A to the correct information in list B
raketka [301]

Answer:

The correct answer would be -

FSH - used as fertility drugs to makes egg mature.

LS - stimulates the release of eggs.

Oestrogen - causes the lining of the womb to break down.

Explanation:

FSH is a hormone released from the pituitary gland and is the abbreviation of Follicle-stimulating hormone which controls the menstrual cycle and growth of eggs in ovaries. It is also used as a fertility drug that promotes the growth of eggs to mature it.

LS or Luteinising hormone is the hormone that is released from the pituitary gland and promotes the surge of the release of eggs.

Oestrogen is the hormone that helps females during puberty during the menstrual cycle to breakdown the lining of the womb.

8 0
3 years ago
Which Indian helped Roland Ross in his research for Malaria by finding Mosquitos?
Gre4nikov [31]
Hey
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Sir Ronald Ross was born in Almora, India in 1857 to Sir C.C.G. Ross, a General in the Indian Army, and his wife Matilda. At the age of eight, he was sent to England to be educated and spent much of his childhood with an aunt and uncle on the Isle of Wight. During his early years he developed interests in poetry, literature, music, and mathematics, all of which he continued to engage in for the rest of his life.
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Hoped That Helped You

8 0
3 years ago
When one DNA molecule is copied to make two DNA molecules, the new DNA
jarptica [38.1K]
That would be B.

One strand will be newly made the other will be old/parent strand.
6 0
3 years ago
Read 2 more answers
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