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Tanya [424]
2 years ago
15

How does the aorta compare in size to the other blood vessels near it?

Biology
1 answer:
mart [117]2 years ago
3 0

Answer: it doesn't

Explanation: Why? The aorta is the largest artery in the body. The aorta begins at the top of the left ventricle the heart's muscular pumping chamber. The heart pumps blood from the left ventricle into the aorta through the aortic valve. Three leaflets on the aortic valve open and close with each heartbeat to allow one-way flow of blood. The aorta is a tube about a foot long and just over an inch in diameter. The aorta is divided into four sections:

• The ascending aorta rises up from the heart and is about 2 inches long. The coronary arteries branch off the ascending aorta to supply the heart with blood.

• The aortic arch curves over the heart, giving rise to branches that bring blood to the head, neck, and arms.

• The descending thoracic aorta travels down through the chest. Its small branches supply blood to the ribs and some chest structures.

• The abdominal aorta begins at the diaphragm, splitting to become the paired iliac arteries in the lower abdomen. Most of the major organs receive blood from branches of the abdominal aorta.

Like all arteries, the aorta's wall has several layers:

• The intima, the innermost layer, provides a smooth surface for blood to flow across.

• The media, the middle layer with muscle and elastic fibers, allows the aorta to expand and contract with each heartbeat.

• The adventitia, the outer layer, provides additional support and structure to the aorta.

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A 30-year-old female who is sexually active complains of a large amount of milk like vaginal discharge. A microscopy slide revea
Maksim231197 [3]

Answer:

Most likely Bacterial vaginosis (BV)

Explanation:

BV is a sexually associated health problem in women caused by a change in the normal balance of bacteria in the vagina.  

This happens when the population of the good bacteria called <em>lactobacillus</em> reduces, giving room for the multiplication and growth of bad bacteria. The good bacteria keep the vagina a bit acidic, thereby preventing the growth and multiplication of bad bacteria.  

A woman that is sexually active is predisposed to having BV. White vaginal discharge that appears milky is one of the symptoms of BV. A vaginal pH 6 affirms it is mostly a BV, as the pH level that is greater than 4.5 would favors the population of bad bacteria.

The 30-year-old female who is sexually active and complains of a large amount of milk like vaginal discharge, with the vaginal pH at 6.0, is mostly likely having Bacteria vaginosis (BV)

3 0
2 years ago
A study was conducted in men aged 40-70 in order to determine whether exercising for 2 or more hours per week decreases the like
Blizzard [7]

Answer: alternative A.

Explanation: In this case, we will consider people that already have had a heart attack. In this specific group of 1,000 people, 236 exercised regularly and had gone through this situation.

We can infer that 23.6% of people who exercised regularly have experienced that by dividing 236/1,000= 0.236= 23.6%.

If 236 people exercised, 1,000-236=764 didn't exercise regularly prior to their heart attacks, so 74.6% were considered to be sedentary.

If there's 0.236 chance out of 1 to exercise and still have a heart attack compared to 0.764 out of 1 to be sedentary and have the same experience, we can divide both ratios to compare them, so 0.236/0.764= 0.3089.

Alternative A claims that people who exercise have around 0.5 chance of having heart attacks compared to people who don't. Since our ratio resulted in 0.3089, we consider this number the closest to 0.5. Alternative <u>B is absurd because in order for people who exercise to have 2x the risk compared to people who don't, the number of people who exercised and went through that must be 2x bigger than people who didn't</u>. Alternative <u>C doesn't apply as well, because we already verified that the chance people who exercise have a heart attack equal to 23,6%. </u>

<u />

5 0
3 years ago
Which change absorbs heat?
trasher [3.6K]
A. Burning natural gas

A liquid changing to gas is called boiling or evaporation.A gas change into a solid is called deposition and a gas changing into a liquid is called condensation.half of these are endothermic, meaning they absorb heat from their surroundings.the others are exothermic,meaning they release heat. Hope this helps
7 0
3 years ago
telophase of mitosis; interphase; phases of mitosis; anaphase of mitosis; what happens in anaphase; prophase mitosis; what happe
Kitty [74]

The chromosomes are separated by a structure called the mitotic spindle.

A chromosome is a lengthy DNA molecule with component or all of the genetic material of an organism. In maximum chromosomes the very lengthy skinny DNA fibers are lined with packaging proteins; in eukaryotic cells the maximum vital of those proteins are the histones. These proteins, aided by chaperone proteins, bind to and condense the DNA molecule to keep its integrity. These chromosomes show a complicated third-dimensional structure, which performs a large position in transcriptional regulation.

Chromosomes are generally seen below a mild microscope best for the duration of the metaphase of molecular division.

To know about chromosomes click here

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3 0
1 year ago
10 points each and brainliest for the first to answer!
natka813 [3]

a crystal has a regularly repeating arrangement of atoms

3 0
2 years ago
Read 2 more answers
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