Select the correct statement about the function of myocardial cells

Asked by wiki @ 09/06/2021 in Medicine viewed by 359 People

Select the correct statement about the function of myocardial cells. A. Each cardiac muscle cell is innervated by a sympathetic nerve ending so that the nervous system can increase heart rate. B. The influx of potassium ions from extracellular sources is the initiating event in cardiac muscle contraction. C. The refractory period in skeletal muscle is much longer than that in cardiac muscle. D. The entire heart contracts as a unit or it does not contract at all.

Answered by wiki @ 09/06/2021

Answer:

Option-D

Explanation:

The myocardial cells form the cardiac muscle present in the heart. The heart receives its signal from the autonomic nervous system but not all the cells receive the signals.

The SV and AV node present in the upper heart produces the potential for the contraction. The action potential gets transferred through the cell and finally reach the lower ventricle through Purkinje fibres.

This allows the contraction of both the ventricles simultaneously and sows that the heart cells contract simultaneously.

Thus, Option-D is the correct answer.

Select the correct statement about the function of myocardial cells

Similar Questions

Select the correct statement describing cellular structure or function

Which statement correctly matches a cell part with its function

Select the correct statement about the ureters

Composition of functions is commutative is this statement always correct

Which cell structure is correctly paired with its primary function

Select the correct statement about cellular respiration

Select the correct statement about lymphocytes

Select the correct statement regarding adipose tissue

Select the correct statement about the heart valves

Select the most correct statement concerning skin cancer

Identify all correct statements about the basic function of fermentation.

Select the correct statement s about sex determination in animals

Identify all correct statements about the basic function of fermentation

Which statement correctly describes an endomembrane function

Select the most correct statement regarding nucleic acids

Most viewed questions in Medicine

A nurse who accepts fees from a home health agency

What is the medical assistant's role during the eye irrigation

The fundamental building block of the nervous system is the

Which is the primary purpose of a medical emergency team

Which is a physiological description rather than an anatomical one

Which of the following statements concerning prion diseases is true

Which does not belong in hand arm washing protocols

The difference between pinocytosis and receptor mediated endocytosis is that

The depolarization of a neural membrane can create a n

Which is a sign of pests in an operation servsafe

Which of the following is an enrichment nutrient for grains

When making an online complaint what advice should you follow

When the ph of the extracellular fluid drops the kidneys

Select the correct statement about the function of myocardial cells

In what way are semisynthetic penicillins and natural penicillins alike