Structure
A muscle cell is called a...
myocyte
Which of the following is NOT a function of the muscular system?
a. movement of the body
b. formation of red blood cells
c. maintaining posture
d. producing heat
b. formation of red blood cells
The brain communications with muscles at the...
neuromuscular junction
What is the thin filament in a sarcomere called?
actin
When the muscle gets bigger this is called...
hypertrophy
The layer that surrounds each muscle fiber is called the...
endomysium
What type of muscle is striated and voluntary?
skeletal muscle
The space between the nerve and the muscle is called the...
synapse
What is the thick filament in a sarcomere called?
myosin
Muscles are connected to bones with...
tendons
The membrane that surrounds the sarcomere is called the...
sarcolemma
The contractile unit of a muscle is a...
sarcomere
What transports the neurotransmitter out of the nerve cell?
vesicles
Acetylcholine causes an action potential to be sent down the t-tubule in the muscle. What is then released into the sarcoplasm?
calcium
When the muscle shrinks this is called...
atrophy
The inner material of a myocyte is called the...
sarcoplasm
What type of muscle is found in the digestive system?
smooth
What is the neurotransmitter called that aids in muscle contraction?
acetylcholine
Calcium attaches to...
troponin
High levels of creatine kinase indicate that someone may have...
duchenne muscular dystrophy or a heart attack
The membrane that surrounds a fascicle is called...
perimysium
The muscular system produces heat in a process called...
cellular respiration
What is the enzyme that breaks down acetylcholine?
cholinesterase
What causes myosin to release from actin?
When the body stiffens after death, this is called...
rigor mortis