1. Which is responsible for detecting the changes in muscle length and speed?
A: (A) motor neurons
B: (B) muscle fibers
C: (C) muscle spindle
D: (D) primary sensory cortex
A: (A) motor neurons
B: (B) muscle fibers
C: (C) muscle spindle
D: (D) primary sensory cortex
举一反三
- Motor unit is A: a motor neuron B: a group of motor neurons with same function C: a group of muscle fiber that involved in execution of a special movement. D: a bundle of muscle fibers E: a alpha motor neuron and the innervated muscle fibers
- One motor neuron and all of the muscle fibers it innervates is called the motor unit.
- Which description is correct about the deep tendon organ? A: protect the muscle from injury during contraction. B: parallel to the extrafugal fiber C: in series with intrafusal fiber D: is a sensory receptor for muscle length
- Which of the following muscle is not innervated by the ansa cervicalis? A: omohyoid muscle B: sternohyoid muscle C: sternothyroid muscle D: thyrohyoid muscle E: digastric muscle
- Which of the following muscle is voluntary muscle？ A: cardiac muscle B: smooth muscle C: biceps D: diaphragm