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
Pavlova-9 [17]
2 years ago
13

The valves in the heart open and close to move blood in between heart chambers. O a) three directions O b) two directions O c) f

our directions d) one direction
Medicine
1 answer:
Lady_Fox [76]2 years ago
7 0

Answer:

B

Explanation:

Two directions, the ventricles. In and out of the heart

You might be interested in
Explain how and why drinking water affects:<br> (A) Blood plasma<br> (B) Blood plasma osmolarity
Oxana [17]

Answer:

(A) - The volume of the blood plasma increases on overhydration and decreaes on dehydration.

(B) - Osmolality of blood increases with the dehydration and decreases with the overhydration.

Explanation:

If the levels of drinking water is increased, then the plasma becomes more dilute and the plasma volume increases because <u>the water will be reabsorbed more and which as a result reduces plasma concentration of the solutes and increases volume of plasma.</u>

Plasma osmolality measures electrolyte-water balance of the body. <u>As mentioned, above on overhydration, the plasma concentration of the solutes decraeses which also decreases osmolality. So, Osmolality of blood increases with the dehydration and decreases with the overhydration. </u>Increased osmolality in blood stimulate the secretion of antidiuretic hormone which results in the increased water reabsorption and therefore, more concentrated urine and hence blood plasma with less concentration.

4 0
2 years ago
Why can't people below 16 get the coronavirus vaccine? Explain.
Novay_Z [31]

Answer:

they are too young.

Explanation:

4 0
3 years ago
Read 2 more answers
What should the health care provider do if she disagrees with a choice the dying patient is making
faltersainse [42]

Answer: nothing

Explanation:

It is the patients decision or if they are under 18, the parents decision. The health care provider can give suggestions if the patient will allow them but otherwise it is their job to listen to what the patient wants.

3 0
2 years ago
Read 2 more answers
All of the following are true about eating prior to exercise EXCEPT: A. eating can cause gastric pain during exercise B. eating
Amiraneli [1.4K]

Answer:

B. eating increases the amount of oxygen available during exercise

8 0
2 years ago
Read 2 more answers
Which of the following reactions with covalently closed, circular DNA (cccDNA) does NOT result in a new linking number? A. incub
alisha [4.7K]

Answer:

Okay

Explanation:

Human topoisomerase I plays an important role in removing positive DNA supercoils that accumulate ahead of replication forks. It also is the target for camptothecin-based anticancer drugs that act by increasing levels of topoisomerase I-mediated DNA scission. Evidence suggests that cleavage events most likely to generate permanent genomic damage are those that occur ahead of DNA tracking systems. Therefore, it is important to characterize the ability of topoisomerase I to cleave positively supercoiled DNA. Results confirm that the human enzyme maintains higher levels of cleavage with positively as opposed to negatively supercoiled substrates in the absence or presence of anticancer drugs. Enhanced drug efficacy on positively supercoiled DNA is due primarily to an increase in baseline levels of cleavage. Sites of topoisomerase I-mediated DNA cleavage do not appear to be affected by supercoil geometry. However, rates of ligation are slower with positively supercoiled substrates. Finally, intercalators enhance topoisomerase I-mediated cleavage of negatively supercoiled substrates but not positively supercoiled or linear DNA. We suggest that these compounds act by altering the perceived topological state of the double helix, making underwound DNA appear to be overwound to the enzyme, and propose that these compounds be referred to as ‘topological poisons of topoisomerase I’

8 0
3 years ago
Read 2 more answers
Other questions:
  • Sample ________ options for athletes include whey protein, low-fat chocolate milk, a peanut butter and jelly sandwich, or a slic
    13·1 answer
  • What type of medication would you give to an animal,al if there were bitten
    12·2 answers
  • One way to tell how intensely you're exercising is to perform the
    11·2 answers
  • Which location is the most likely site of smooth muscle?
    14·1 answer
  • The pharmacy has received its order of Schedule II medi-
    5·1 answer
  • Prefixes, Roots, and Suffixes
    12·2 answers
  • Randy manages a team of computer programmers. The team is working on multiple projects, and
    8·1 answer
  • Create a job that doesn't exist yet for medicine. (Internal medicine to be specific)
    13·1 answer
  • Addiction to drugs related to dopamine release is especially strong when it involves the
    7·1 answer
  • a school-aged child who has just arrived from africa has been exposed to diphtheria, and a nurse in the pediatric clinic is to a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!