BIOL&212 - Chapter 50 Review

Front

What is the primary difference in the response of a sensory receptor to different stimuli?

Back

The magnitude of the receptor potential.

Front

During muscle contraction, what happens to the 'Z' Lines?

Back

Get Closer Together.

Front

What are sensory receptor cells specialized as?

Back

Neurons or cells that regulate neurons.

Front

What does calcium attach to in a muscle contraction?

Back

Troponin.

Front

What is defined as one neuron and all the skeletal muscle cells it stimulates?

Back

Motor unit.

Front

What is the role of sensory receptors in the nervous system?

Back

To detect and respond to stimuli from the environment.

Front

What is the function of myosin in muscle contraction?

Back

Myosin interacts with actin to facilitate muscle contraction.

Front

What is the role of tropomyosin in muscle contraction?

Back

Tropomyosin blocks the binding sites on actin for myosin.

Front

What is the neuromuscular junction?

Back

The synapse between a motor neuron and a skeletal muscle fiber.

Front

What is the function of troponin in muscle contraction?

Back

Troponin binds calcium ions and causes tropomyosin to move, exposing binding sites on actin.