what connective tissue surrounds the fascicle

• endomysium

• perimysium

• epimysium

What are the functions of the muscular system (select al that apply)

• hematopoiesis

• produce movement

• stabilizing joints

• generate heat

which of the following are composed of myosin

• sarcomere

• z line

• thick filament

• thin filament

What is the layer of connective tissue that surrounds the entire skeletal muscle?

• perimysium

• epimysium

• endomysium

• myofibril

What is calcium's role for muscle contraction

• expose myosin binding sites on the actin

• release the inhibition of z line

• cause ATP binding cites

• increase the action potential transmitted along the sarcolemma

What is the neuromuscular junction called in between muscle and nervous cells?

• neurotransmitter

• motor unit

• synaptic cleft

• motor neuron

After the power stroke has occurred, calcium will...

• leave the cell by diffusion

• be reabsorbed into the sarcoplasmic reticulum

• actively pumped into the extracellular fluid for storage until the following muscle contraction

• be destroyed by cholinesrase

what is the sources of energy for muscle contractions?

• ADP

• Glucose

• Simple sugars

• Creatine phosphate, ATP

What are the rules that muscles follow? (check all that apply)

• muscles have to attach at two points at least

• Muscle fibers run in the direction of pull from the muscle.

• Muscles must cross to joints

• Muscle can only pull

What is the name of this muscle

• triceps brachii

• biceps brachii

• pectoralis major

• trapezius