Unit 7 Muscle

Which is NOT a characteristic of a skeletal muscle?

• Voluntary

• Controlled by the nervous system

• Involuntary

• Striated

The covering around the entire muscle is the:

• Endomysium

• Perimysium

• Tendon

• Epimysium

Calcium ions released from the sacroplasmic reticulum bind with:

• Actin

• Myosin

• Troponin

• Tropomyosin

What is the neurotransmitter released at the neuromuscular junction?

• ATP

• ACh (acetylcholine)

• Calcium ions

• Action Potential

The structure between the muscle and bone is called a(n):

• Tendon

• Muscle

• Ligament

• Sprain

The unit of muscle contraction is the:

• Myofibril

• Fasicle

• Myofiber

• Sacromere

What makes up the majority of the thick filament?

• Actin

• Tropomyosin

• Myosin

• Troponin

The area between the neuron and muscle is the:

• T-tubules

• Synaptic Cleft

• Terminal cisternea

• Sarcoplasmic reticulum

A type of contraction in which the muscle shortens is:

• Isometric

• Hypertonic

• Isotonic

• Isomonic

A muscle contraction that has a change in the length thus movement is a:

• Isometric

• Isotonic

• Osmotic

• Isomotic