It controls openings in the digestive and urinary systems.
What's a sphincter.
It releases calcium ions (Ca2+), initiating muscle contraction.
What is the sarcoplasmic reticulum?
When the stimulus is spreading across the muscle and no actual tension occurs.
What is the latent period?
Reactions that break down larger molecules into smaller ones, releasing energy as ATP.
What are catabolic reactions?
When more stimuli arrive before the relaxation phase completes, and a more powerful contraction occurs.
What is summation?
It's a layer of collagen fibers that separates muscle from surrounding organs.
What is epimysium?
Thick, dark filaments, made of the protein.
What is myosin?
It is the direct unit of energy used by muscle fibers.
What is ATP?
This process produces less ATP (2 instead of 34 ATP) than cellular respiration and creates a waste product called lactic acid.
The signal to contract is sent to every fiber in the muscle simultaneously through these.
What are the T-tubules?
A sheet of collagen fibers that attaches a muscle to another muscle.
What is an aponeurosis?
Oblique.
What is diagonally arranged?
The two forms of energy that can be stored in muscle tissue.
What is creatine Phosphate and glycogen?
The amount of ATP an average bicep uses per second of contraction.
What is 9.375 quintillion?
"A"
What is the T-tubule?
The cell membrane of the muscle fiber.
What's the sarcolemma?
Pulls a limb toward the midline of the body.
What is adduction.
What is Ca+ leaking out of the SR (ATP levels will be too low to pump the CA+ back into the SR allowing the actin and myosin to detach)?
This exercise focuses on improving endurance by improving oxygen intake and increasing glycogen storage.
What is aerobic exercise?
"E"
What is myofibril?
Contain a special protein called myoglobin that reserves additional oxygen within the muscle.
What are slow-twitch fibers?
These muscle fibers have large glycogen reserves and fewer mitochondria.
What are fast-twitch fibers?
The two possible causes of cramps.
What is low ATP or NA+ level?
This is a genetic neurodegenerative disease that damages motor neurons of the peripheral nervous system, causing muscle atrophy due to disuse.
What is ALS (Lou Gehrig's Disease)?
The amount of tension generated by a muscle and its endurance are dependent on these two factors.
What are the amount of ATP available and the amount of stimulus?