A single motor neuron together with all the muscle fibres it supplies is called
- A. a sarcomere
- B. a motor unit
- C. a reflex arc
- D. a myofibril
Explanation
All fibres of one motor unit contract together when the neuron fires, and fine muscles like those of the eye have tiny units for precise control. A sarcomere is a contractile segment inside a fibre, a different level of organisation.
Related questions
Which of the following bones belongs to the axial skeleton?
The number of cervical vertebrae in the human vertebral column is
The longest and strongest bone of the human body is the
In compact bone, the concentric rings of matrix laid down around a central canal form a structure called
The hardness of bone is due to the deposition of