Unit 5 Vocabulary Muscle System

The location where the motor neuron reaches the sarcolemma of the muscle fiber is the _____.

• Neurotransmitter

• Acetylcholine

• Synaptic cleft

• Neuromuscular Junction

One neuron and all the skeletal muscle cells it stimulates is the ____ ___.

• Neurotransmitter

• Neuromuscular junction

• Motor unit

• Synaptic cleft

What is the specific neurotransmitter that stimulates the muscle contraction?

• GABA

• Acetylcholine

• Serotonin

• Dopamine

The neurotransmitter stored in the axon terminal identified as #3

• Acetylcholine
• Protein Channel
• Calcium Ion (Ca²⁺)
• Syanptic Cleft

What is acetylcholine?

• an ion pump on the postsynaptic membrane

• a source of energy for muscle contraction

• a component of thick myofilaments

• a neurotransmitter that stimulates skeletal muscle to contract

The cell membrane of a skeletal muscle fiber is called the:

• sarcomere

• myofilament

• sarcolemma

• sarcoplasm

Which type of signaling mechanism is electrical and is produced inside of cells?

• Sensory Signal

• Neurotransmitter

• ACh

• Action Potential

respiration using oxygen

• aerobic respiration

• anaerobic respiration

• -lysis

• -plasm

A patient's arm has been in a cast and the muscle is smaller from disuse, this is known as?

• hypertrophy

• muscle tone

• atrophy

• strain

What type of muscle is found in the walls of the heart?

• sphincter

• cardiac

• skeletal

• smooth