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
Tasya [4]
2 years ago
15

Which of the following statement(s) is (are) true? A. The force the heart must overcome in order to pump blood is known as the i

ts stroke volume. B. The term preload refers to a tension, or pressure, that the left ventricle must develop in order for the heart to function properly. C. The preload and afterload are the primary factors that cause the heart rate to change. D. Contractility of the heart muscle refers to the force of contraction that this muscle can exert. E. Both C and D are true.
Medicine
1 answer:
Verizon [17]2 years ago
6 0

Answer:  D. Contractility of the heart muscle refers to the force of contraction that this muscle can exert.

Explanation:

The myocardial contractility is ability of the heart muscles to contract. This is achieved by the forces which develop between the contracting muscles caused by the filaments of actin and myosin.

The degree of binding of the muscle filaments dependents upon the calcium ion concentration. These actions are controlled in vivo by the sympathetic nervous system. It is driven by the release of the catecholamine, which is a process which determines the calcium ion concentration inside the cytosol of the muscles of the heart.  

You might be interested in
In the case below, the original source material is given along with a sample of student work. Determine the type of plagiarism b
iogann1982 [59]

Answer:

<u><em>This is not plagiarism</em></u>

Explanation:

Remember, plagiarism is a bad practice of taking someone else's written text or document as if it was your own.

Note the Student's version has no trace of plagiarised text since there is no word for word copying. However, the student version implores deductive reasoning by connecting and summarising the information from the original version.

8 0
3 years ago
Read 2 more answers
Most water is reabsorbed from the filtrate in the
love history [14]

Answer:

The answer is B. descending loop of henle.

Explanation:

Most of the filtrate water is reabsorbed at the level of the DESCENDING LOOP OF HENLE. This branch has a wide cortical zone and an extreme spinal cord; It has low permeability to ions and urea, but is very permeable to water; there are a few channels of aquapurine type 1 that absorb 20% of the filtered water.

5 0
3 years ago
What are the 5 steps to cleaning and sanitizing in Servsafe?
pentagon [3]

Food should be scraped or wiped off the surface. Clean the area. the surface with water. Clean the surface. Let the surface dry naturally.

<h3>What is the proper order for cleaning and sanitizing?</h3>

In the first sink, wash the dishes and kitchenware with soap and warm water. 3. Fill the second sink with crystal-clear, pure water and rinse the dishes and kitchenware. 4. In the third sink, sanitize the dishes and kitchenware with a chemical solution or extremely hot water (at least 171°F).

<h3>What five cleaning procedures are there?</h3>

Time, temperature, mechanical action, chemical reaction, and methods are the five main aspects that influence cleaning and are all equally crucial. The best outcomes will come from balancing these variables.

to know more about cleaning and sanitizing here:

brainly.com/question/5475985

#SPJ4

4 0
1 year ago
Explain why Balcetis and her team came up with the slogan, "Keep your eyes on the prize."
Lesechka [4]

Answer:

Balcetis explains that when people are in shape, they are more likely to view an exercise as achievable. More important than fitness, however, was individuals’ motivation to exercise. Those who were motivated to exercise saw a finish line as closer, than those who were unmotivated.

In a second study, Balcetis experimented with how changing one’s perspective on an exercise, can help to make it seem more doable. Balcetis presented a finish line at the end of a moderate sized path. Her control group looked around their settings as they normally would, and then estimated how far away the finish line was. The experimental group was instructed to look directly at the finish line and to try to eliminate other objects in their point of view. The results: the group that kept their eyes on the prize estimated the finish line to be thirty percent closer than those in the control group.

Last, Balcetis examined how perspective can help directly improve ease and efficiency. She had subjects try a moderately difficult exercise of walking a fair distance with weights. Again, one group kept their eyes on the finish line, while the other group proceeded normally. Those who focused on the finish line, felt that the exercise was fifteen percent easier than those in the control group. The focused group also moved twenty-three percent faster.

So what do all these findings mean? The way we look at exercise can make a big difference in how hard it feels and how hard we work at it. As Balcetis says, “keeping your eyes on the prize, may be an additional strategy you can use to promote a healthy lifestyle.” Well any strategy that makes exercise seem easier and gets me working harder, is one I’m definitely down for.

Explanation:

7 0
3 years ago
Explain why it is difficult to know exactly how many people are poisoned.
Alexeev081 [22]
Um I don’t know maybe because they aren’t God so they ain’t gonna know everything
5 0
3 years ago
Other questions:
  • Which of the following is a type of circulatory shock? A. cardiogenic, which results from any defect in blood vessels B. circula
    12·1 answer
  • Name the three external openings in the perineum.
    12·1 answer
  • What does a nuclear medicine technologist do?
    8·1 answer
  • With the cognitive domain, what is a way to help patients remember<br> critical information?
    5·1 answer
  • Bones are made of which type of tissue?
    13·2 answers
  • The pharmacy receives a prescription for Detrol (tolterodine) 1 mg bid for overactive bladder for one month. How many 1 mg table
    7·1 answer
  • A prefilled syringe contains 120 mg of drug in 2 mL of solution. How many mL of the injection should be administered to obtain 0
    15·1 answer
  • What happens if an influenza vaccine shipment has been compromised and/or not stored at appropriate temperatures
    15·1 answer
  • Which is NOT a factor that influences our blood pressure?
    10·2 answers
  • Which assessment made by the nurse helped in reassigning the client emergency service index?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!