The outer connective tissue wrapping on skeletal muscles.
What is epimysium?
The "thick" myofilament that is attached to the M-line.
What is myosin?
We breath to get oxygen and eat to get food in the process of cell respiration to make this molecule.
What is ATP?
A sustained involuntary contraction
What is a muscle cramp?
Humans have 3 types of muscle; skeletal muscle, cardiac muscle, and this.
What is smooth muscle?
Make UP muscles and made OF a bundle of muscle fibers.
What are fascicles?
Sarcomeres are responsible for this action by muscles.
What is contraction?
Myosin heads preform this when sliding down actin and releasing ADP and phosphate.
What is a "power stroke"?
Muscles become small and weak due to disuse
What is atrophy?
The scientific name for the "striped" look of skeletal muscle.
What is "striated"?
This part of a muscle is has a special membrane called the sarcolemma.
What are muscle fibers?
What are Z-lines?
Nerve signals release this chemical that pulls troponin and tropomyosin out of the way for contraction to occur.
What is Calcium?
This type of respiration happens more when in oxygen debt.
What is anaerobic respiration?
What is aerobic respiration?
Prefixed by words such as "epi", "peri", and "endo"; this word means "muscle" in greek.
What is "mysium"?
Two substances that prevent myosin and actin from bonding.
ATP uses its __________ energy to "recock" the myosin head turning itself into __________ and phosphate. (2 answers)
What is chemical and ADP?
The condition when cholinesterase does not break down the acetylcholine in the synapse, resulting in a person's muscles contracting and not relaxing
What is tetanus?
Muscles cannot partially contract, this is called the...
What is the all-or-nothing (none) response?
Starting at fascicle and not counting tissue wrappings, follow the instructions:
- Go up 1 level
- Go down 3 levels
- Go up 2 levels
- Go down 1 level
- Go down 1 level
What muscle structure does it end on?
What are myofibrils?

This area on the sarcomere makes the "light" colored section of the striated look on muscle cells.
What is the I band?
This process involves myosin heads pulling actin filaments closer to the M-line, shortening the sarcomere. However, neither the actin nor myosin filaments change length. (name of the whole process)
What is the "sliding filament model"?
Muscles stay contracted during rigor-mortis because this chemical is no longer being produced to release the muscle contraction.
What is ATP?
After a long day of exercise, you notice your muscles feel sore and stiff. This sensation is primarily due to tiny tears in muscle fibers, a process that stimulates repair and growth of the muscle. Name this process.
What is hypotrophy?