1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inn [45]
2 years ago
8

In order for blood to always flow unidirectionally through a closed circulatory system, the ________. A. blood vessels farthest

from the heart must have valves B. capillaries must have a thick endothelium C. arteries must be elastic D. pressure in all vessels must be equal
Biology
1 answer:
REY [17]2 years ago
6 0

The blood vessels farthest from the heart must have valves.

The valves which are present in the blood vessels prevent the backflow of the blood back into the specific organ.

There are different valves present in the heart are:

  • The tricuspid valve is situated between the right atrium and right ventricle.
  • The pulmonary valve is between the right ventricle and the pulmonary artery.
  • The mitral valve is between the left atrium and left ventricle.
  • The aortic valve is between the left ventricle and the aorta.

Other vales which are present in the blood vessels are in leg. Leg veins do require the valves. If not present the blood will go back down into the feet because of the gravity. Thus there are various valves present in the leg veins.

Valves in veins are bicuspid, meaning they have two flap-like structures that regulate blood flow in the vein.

To know more about the Valves, refer to this link:

brainly.com/question/12926213

#SPJ4

You might be interested in
How can insulin deficiency lead to an increase in blood glucose concentration?
MakcuM [25]

When insulin is deficient , GLUT4 transporters are not inserted into the cell membranes , glucose is not transported into the cells and the blood glucose concentration increases.

Insulin deficiency provides more amino acid and glycerol substrates for glucose synthesis  ie increased gluconeogenesis .

With a deficiency of insulin, there is both increased hepatic glucose production through increased glycogenolysis and gluconeogenesis as well as decreased glucose use. The result is hyperglycemia.

To know more about insulin deficiency here

brainly.com/question/12978381

#SPJ4

6 0
1 year ago
When recombinant DNA is inserted into the genome of a host organism, what's created?
Lostsunrise [7]
A. A transgenic organism
Transgenic means "crossed genes" whichnis what happened
6 0
3 years ago
A 10-year-old child has an unknown infection and will need to provide a urine specimen for culture and sensitivity. To assure th
igomit [66]

Answer:

Obtain specimen before antibiotics are given.

Explanation:

Antibiotics may be defined as the chemicals given to kill or restrict the growth of the bacterial infection. The antibiotics are not available for virus as they can change their DNA.

The sensitivity results can be accurate if the nurse is able to ensure the successful culture of the antibiotics. Throat culture specimen is taken from the pharyngeal area. The aseptic technique can be used by the nurse for obtaining the blood and urine specimen.

Thus, the answer is obtain specimen before antibiotics are given.

7 0
3 years ago
What determines whether a resource is considered renewable? *
solmaris [256]
C bc the key word is replaced
7 0
3 years ago
A radioactively labeled protein is made by cells and followed through the various organelles in the secretory pathway. After six
Komok [63]

Answer:

C) protein possesses a signal for localization within the Golgi apparatus.

Explanation:

Protein targeting or sorting is a process by which synthesized proteins are transported to their appropriate localizations in the cell or outside it. Proteins can be targeted to the inner space of an organelle (such as Golgi apparatus or endoplasmic reticulum) or its membrane, plasma membrane, or to exterior of the cell via secretion.  

Usually, protein contains signal sequence on the N terminus that is involved in destination targeting.

8 0
3 years ago
Other questions:
  • Explain how sustainability is dependent on the ecological footprint
    14·1 answer
  • In the __________, a tuft of capillaries in the renal cortex, blood is filtered through the porous capillary walls. renal cortex
    14·2 answers
  • Help me plzz i need help right now I am really confused at this
    12·1 answer
  • How is over-irrigation damaging to soil?
    8·1 answer
  • Help <br> Nucleic acid <br> Certain protein<br> Cell membranes<br> Certain carbohydrates
    11·1 answer
  • What is a function of the spinal cord ?
    14·2 answers
  • You have a 12 sided cube that is numbered from 1 to 12. What is the probability of rolling a five?
    8·2 answers
  • True or false<br> All proteins found embedded in the cell membrane are transport proteins
    7·2 answers
  • Which of the following choices is NOT part of the Scientific Method?
    12·1 answer
  • Which of the following is an impact of fishing on fisheries? a. An increase of fishery health b. An increase in fishery populati
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!