QuestionSBA
QuestionChoice
This is incorrect. Skeletal muscle is voluntarily controlled. Smooth muscle and cardiac muscle are not.
10026026
b
Involuntarily controlled
QuestionChoice
This is incorrect. Skeletal muscle does not make up the composition of internal organs. Instead, it is found in the muscles that attach to bone to move the body. Smooth muscle and cardiac muscle are found in internal organs.
10026027
c
Found in internal organs
QuestionChoice
This is incorrect. Nitric oxide (NO) causes relaxation in smooth muscle cells, not striated muscle cells.
10026029
e
Nitric oxide causes relaxation
QuestionChoice
This is correct. Skeletal muscle and cardiac muscle are striated. This refers to the 'striped' appearance on microscopic examination, which comes from their repeating functional units or sarcomeres that allow skeletal muscle contraction.
10026025
a
Striated
QuestionChoice
This is incorrect. Smooth muscle cells are linked by gap junctions, to allow a rapid spread of depolarisation. Skeletal muscle cells are not linked by gap junctions.
10026028
d
Cells are linked by gap junctions
Concept
Chapter
2693
3783
Types of muscle
Topic
154
Musculoskeletal physiology and disease
17603
A 47 year old male is undergoing investigations for a suspected neuromuscular dystrophy. As part of this, a muscle biopsy is taken and sent for histological examination.

Which of the following is a feature of skeletal muscle fibres?
a