muscle contraction

What does calcium attach in a muscle contraction?

• Myosin

• Tropomyosin

• Troponin

• Actin

Which of the following occur when ATP binds to the myosin head?

• Myosin head change to low energy configuration

• Myosin head undergoes power stroke

• Myosin head detach from actin

• Myosin head forms cross bridge

Which of the following occur during muscle relaxation (multiple answer)?

• Release of calcium from sarcoplasmic reticulum

• Tropomyosin covers myosin binding site

• Acetyl choline released into synapse

• No cross bridge formation

• ATP binds to myosin head

Which myofilament makes up the THIN filaments of muscle cells?

• actin

• myosin

• connectin

• hemoglobin

The THICK filaments found in a muscle cell are called

• actin

• myosin

The neurotransmitter that signals muscle contraction is called...

• Acetylcholine

• Myosin

• Actin

• Calcium

Region where a motor neuron comes in close contact with a muscle cell.

• neurotransmitter
• muscular dystrophy
• muscle tension
• neuromuscular junction

What is the name of the protein that covers the binding sites on actin?

• Myosin

• Tropoblasts

• Titan

• Tropomyosin

The part of the sarcolemma (the muscle cell membrane) that meets a motor neuron

• synaptic knob

• motor end plate

• synaptic cleft

• motor neural termination

The space between the motor neuron and a muscle fiber at a neuromuscular junction

• synaptic knob

• motor end plate

• synaptic cleft

• motor neural termination