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]
3 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]3 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
Imagine you are working as a medical professional in a clinic a d you see a co worker breaking a rule. What should you do?
puteri [66]

Answer:

Report them to supervision, there is no place for error or rule breaking in a medical profession

Explanation:

7 0
3 years ago
Write the location of the:
Rainbow [258]

a. front of the upper arm between the shoulder and the elbow

b. upper arm, lies deeper than the biceps brachii

c. external body

d. beneath the skin

e. back of the upper limb

f. arm; runs from shoulder to elbow

g. beneath the skin, lowermost layer of the integumentary (skin) system in vertebrates

h. upper limb

i. upper limb

j. posterior arm and posterior forearm

k. upper arm; continues down the ventral surface of the arm until it reaches the cubital fossa at the elbow

hope this helps :)

4 0
3 years ago
Explain the negative feedback loop between baroreceptors, the cardiovascular (CV) center, and the heart. Address: dropping blood
marysya [2.9K]

Answer with Explanation:

Homeostasis<u> allows an organism to regulate its internal condition in order to adapt to a changing environment.</u> In order to maintain this, the positive and negative feedback mechanisms (loops) remain essential <em>when it comes to physiological processes that are deemed complicated.</em>

<em>Let's talk about the "Negative Feedback Loop."</em>

  • The "baroreceptors" are sensors in the blood vessels.
  • For example, when the body's temperature changes, the body's initial reaction is to return to its normal level. So, it goes the same way with blood pressure. When the baroreceptors sense an increase or a decrease in blood pressure, it communicates with the hypothalamus by sending a signal. Then, the hypothalamus sends a message to the organs that are responsible for returning the blood pressure to normal level. These organs are the heart, kidneys and blood vessels. So, if a person experiences a "dropping blood pressure," heart stimulation follows (causing an increase heart rate) due to hormonal vessel constriction. This also allows the kidney to retain more water, thereby increasing the blood pressure.

This is how all these elements work together to achieve homeostasis.

5 0
3 years ago
the nurse measures the pulmonary artery wedge pressure in a client with left ventricular dysfunction. which action will the nurs
Maurinko [17]

The action the nurse should  take after deflating the balloon tip following pressure measurement is to deflate the balloon as soon as the PAWP is measured.  

<h3>What is  pulmonary artery wedge pressure (PAWP)?</h3>

The pulmonary wedge pressure(PAWP) also called pulmonary arterial wedge pressure, pulmonary capillary wedge pressure, pulmonary artery occlusion pressure, or cross-sectional pressure, is the pressure measured by wedging a pulmonary artery catheter with an inflated balloon into a small pulmonary arterial branch.

Although the balloon must be inflated to measure the PAWP, it is deflated as soon as the PAWP is obtained to allow blood to continue to flow through the pulmonary artery.

Learn more about pressure at: brainly.com/question/15215203

#SPJ1

3 0
1 year ago
What is a advanced directive
olga2289 [7]

Answer:

a written statement of a person's wishes regarding medical treatment, often including a living will, made to ensure those wishes are carried out should the person be unable to communicate them to a doctor.

Explanation:

If someone wants a specific treatment plan in case if they die they have a written advanced directive.

8 0
3 years ago
Read 2 more answers
Other questions:
  • What are the following are contraindications to MET?
    8·1 answer
  • A body mass index (BMI) over 30 is
    6·2 answers
  • Which BEST explains why a patient who had a myocardial infarction will never recover, in spite of all the drugs prescribed to hi
    9·2 answers
  • Attitude. Mary, a medical coder, overhears her coworker, Jason, making disparaging
    13·1 answer
  • Why the left side of the brain controls the right side
    12·1 answer
  • How long is the antibiotic azithromycin in your system after last dose?.
    8·2 answers
  • A 6-year-old child is being treated for a parasitic infection. When reviewing results from the child's white blood cell count, w
    7·1 answer
  • Whats the best procedure to deal with corrosive substances that have been ingested milk or mineral oil?
    11·1 answer
  • Your patient is a 10 year old boy that was born premature. now, after measuring his height and weight, you find that his bmi is
    13·1 answer
  • If the patients cannot or will not follow through on treatment recommendations, it does _____.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!