Embibe Experts Solutions for Chapter: Muscular and Skeletal System, Exercise 1: AP EAPCET Medical 2021 (6-Sep Forenoon)

Which of the following is not a character of red muscle?

Regulatory proteins in a myofibril are

Arrange the following in a sequence from edge to centre in a sarcomere.
$A)$ $M$-line
$B)$ $Z$-line
$C)$$H$-zone
$D) I$-band

Which of the following statements about muscles are correct?
(i) Muscles show three essential properties such as excitability, conductivity and contractility.
(ii) Muscular tissue is endodermal in origin except muscle of iris and ciliary body.
(iii) The cytoplasm of muscle fibre has several myofibrils.
(iv) Skeletal muscles exhibit slow and prolonged contractions.
(v) The regular arrangement of myosin and actin filaments is responsible for alternate dark and light bands of striated muscle.

The part of sarcomere that contains both thick and thin filaments are present in ________.

Assertion (A): Light meromyosin and Heavy meromyosin are often called regulatory proteins.
Reason (R): The above said molecules have a role in masking and unmasking the active sites on actin.

Women in their post menopause are likely to suffer from ______