wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Assertion :

Muscle cells are also called myofibrils.

Reason:

Muscle cells are very thin and elongated.


A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Assertion is correct but Reason is incorrect
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Both Assertion and Reason are incorrect
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Since muscle cells are very thin and elongated, therefore, they are also called as muscle fibres and not myofibril. Myofibril is the unit of a striated muscle fibre. A striated muscle fibre is composed of many myofibirils arranged along the long axis of the fibre. A myofibril is of two types of myofilaments-actin filaments and myosin filaments. Sliding of these myofilaments over one another cause the contraction and relaxation of the muscle fibre.
So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Skeletal Muscle
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon