Asked by Britney Crabtree on Jul 14, 2024
Verified
The time between application of the stimulus to a motor neuron and the beginning of contraction is called the ________ phase.
A) contraction
B) relaxation
C) latent or lag
D) refractory
E) threshold
Latent Phase
The first stage of labor, characterized by mild, irregular contractions and gradual dilation and effacement of the cervix.
Motor Neuron
A type of neuron that conveys impulses from the central nervous system to a muscle or gland, causing it to contract or secrete.
Contraction
The process by which muscle fibers shorten and generate force, resulting in movement or tension.
- Understand the concepts of latent phase, contraction phase, and relaxation phase in muscle activity.
Verified Answer
KI
kadija ibrahimJul 20, 2024
Final Answer :
C
Explanation :
The latent or lag phase is the period between the application of a stimulus to a motor neuron and the beginning of contraction in the muscle fiber. This phase represents the time it takes for the action potential to propagate along the neuron and for the muscle activation processes to occur, leading up to the start of muscle contraction.
Learning Objectives
- Understand the concepts of latent phase, contraction phase, and relaxation phase in muscle activity.