Muscle Structure
The connective tissue that covers skeletal muscle.
Fascia
The ion that controls muscle contractions that is released due to a motor neuron stimulus.
Where does the energy for muscle contraction come from?
ATP
Where is a place that smooth muscle can be found?
Bladder, digestive system, lining organs
Tension within a muscle remains the same but the length of the muscle changes.
The area that the muscle attaches closest to the midline/proximal part of the body.
What is the origin?
The protein associated with actin.
myosin
The reddish-brown pigment that is the temporary store for oxygen in muscles.
Myoglobin
The type of smooth muscle found in the lining of internal organs.
visceral
Any disease involving muscles.
What is myopathy?
Rapidly contracting muscle fibers that have a poor blood supply and are easily fatigued.
What is fast twitch?
Name two things that can stop a muscle contraction.
What is:
energy system fatigue, nervous system fatigue, voluntary nervous system, sensory nervous system information
What builds up during strenuous exercise that can be toxic due to lack of oxygen?
Lactic Acid
What is the wavelike contraction found in smooth muscle called?
Peristalsis
What is a prime mover or agonist?
The layer (cylinder) before filaments actin and myosin.
Myofibrils
The term for the neuron which innervates skeletal muscles.
motor neuron
When muscles use up ATP, what supplies the energy to convert ADP back to ATP?
Creatine phosphate
The bands that hold together adjacent cardiac cells and enable them to contract as a single unit.
Intercalated discs
Two things that determine the strength of a muscle contraction.
What is:metabolic, number of fibers, number of motor neurons firing, intensity of stimulation, size
What attaches muscle to bone?
Tendons
Three things needed for skeletal muscle contraction.
What is a neural stimulus, calcium, and ATP?
During strenuous exercise, the body uses oxygen to resupply ATP, so it relies on what type of respiration?
Aerobic
The term that describes the muscles of the heart to contract without an external stimulus
What is autorhythmic?
% body weight of average human that muscle makes up.
What is 40-50%?