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Rhythmical contraction is noticed in...

Rhythmical contraction is noticed in

A

Cardiac muscles

B

Striped muscles

C

Unstriped muscles

D

In all the muscles.

Text Solution

Verified by Experts

The correct Answer is:
A
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Cardiac muscles undergo rhythmic contraction and relaxation throughout life.

Assertion (A): Skeletal muscles show rhythmic contractions and relaxations. Reason (R): Cardiac muscles are skeletal muscles which are voluntary in function.

Knowledge Check

  • The rhythmic contraction of the lining of muscles of canal to push the food along the gut is called______.

    A
    Peristalsis
    B
    facilitetion
    C
    guttation
    D
    No option is correct

  • X" is the rhythmic contraction and relaxation in the aorta and its main arteries. What is X ?

    A
    Heartbeat
    B
    Heart rate
    C
    Pulse
    D
    Cardiac output

  • Assertion : Sino-atrial node (SAN) is called the pacemaker Reason : SAN generates the maximum number of action potentials and is responsible for intiating and maintaining the rhythmic contractions of the heart.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false
    D
    If both assertion and reason are false

    • Similar Questions

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    Write true or false Cardiac muscles undergo rhythmic contraction and relaxation throughout life.

    Why actinoid contraction is more than lanthanoid contraction

    Read the following statement and select the correct option Statement 1 : Cardiac muscle of the heart is striated and has intercalated discs between its fibres (cells) Statement 2 : It provides quick, powerful and rhythmic contractions to the heart.

    F-centre defect is noticed in:

    Unit of contraction :

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