Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
1.8k views
in Animal Tissue by (48.6k points)
closed by

What is sarcomere? Explain the structure of striated muscle with the help of suitable diagram.

1 Answer

+1 vote
by (49.3k points)
selected by
 
Best answer

Striped or Striated Muscles-

They are attached to the bones with the help of tendons/ aponeurosis, hence also called as skeletal muscles. They are voluntary in function, hence also called as voluntary muscles.

The muscle fibre is long, thread-like, unbranched & multinucleated. The muscle fibre, being muscle cell, is bounded by a sarcolemma. It’s cytoplasm is called as sarcoplasm. The muscle fibre consists of myofibrils which are situated parallel to each other. The myofibrils are made up of actin and myosin contractile proteins. The muscle fibre has alternate light and dark bands. The light band is called as I – band (Isotropic band) where dark band is called as A – band (Anisotropic band). There is a Z – line in the centre of I – band. The structure between two Z – lines is called as sarcomere which is a functional unit of muscle. During muscle contraction, the myosin filaments remain stationary while the actin filaments slide over the myosin.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...