Anatomy and Physiology

The layer that surrounds the whole muscle

• Myofiliment

• Epimysium

• Perimysium

• Endomysium

What is the first step of the sliding filament theory?

• Myosin makes contact with the actin forming actomyosin (actin-myosin crossbridge)

• ATP is released as ADP + phosphate, causing the myosin to spring forward along the actin

• Myosin head wants to interact with actin, but tropomyosin is in the way

• The sliding of myosin along the actin results in muscle tension causing muscles to move

A Sarcomere...

• is a structural unit of a myofibril

• consists of an entire A band and the nearer half the I band on either side

• all of the above

What powers muscles?

• ATP

• Electricity

• Batteries

• A hamster wheel

Myosin

• a neurotransmitter

• a muscle fiber

• a thin filament

• a thick filament

What breaks down acetylcholine?

• cholinesterase

• ATP

• ADP

• cholesterol

Which one is not a type of muscle?

• skeletal

• cardiac

• thoracic

• smooth

The Motor End Plate is...

• folded area where muscle and neuron communicate

• a gap between the neuron and motor end plate

• where a nerve and muscle fiber come together

• where neurotransmitters are stored

ATP plays a big role in the...

• skeletal system

• acetylcholine

• sliding filament theory

• neuromuscular junction

Which is not a way the body replenishes ATP?

• Cellular respiration

• Direct phosphorylation of ADP by creatine phosphate

• Anaerobic Respiration

• Anaerobic respiration