Blog

The increase in muscle tension that occurs with an increase in the intensity (voltage) of a stimulus is called…

Compare the values below. Which is greater, or are the two values equal? A. Motor unit size in the muscles of the hand B. Motor unit size in gluteus maximus

Is the statement below True or False? Tetany occurs when stimulation of a muscle fiber is so frequent that there is no relaxation..

Put these general events involved in synaptic transmission in chronological order.

Is the statement below True or False? The graded potential called a “action potential” results from the opening of a voltage-gated ion channel.

Is the statement below True or False? Tetany occurs when stimulation of a muscle fiber is so frequent that there is no relaxation..

The image above represents an experimental setup where a motor neuron and a muscle cell it innervates are each fitted with a stimulating electrode. For each of the situations below, indicate whether the muscle cell would produce a normal twitch, an extra-long twitch, or no twitch.

Skeletal Muscle Action Potential – Part 2 Take a look again at the graph of an action potential on the sarcolemma of a skeletal muscle cell (given below). Describe what is happening at a molecular level to generate the depolarization and repolarization phases. Make sure to include in your answer: which ions are moving, in what direction each ion is moving, and what kind of channel each ion is moving through.  

Compare the values below. Which is greater, or are the two values equal? A. Number of neurons a signal from an olfactory receptor cell travels along to reach the olfactory cortex.B. Number of neurons a signal from a gustatory cell travels along to reach the auditory cortex.

The image above represents an experimental setup where a motor neuron and a muscle cell it innervates are each fitted with a stimulating electrode. For each of the situations below, indicate whether the muscle cell would produce a normal twitch, an extra-long twitch, or no twitch.