Muscle Anatomy & Structure
This is the outermost layer of connective tissue that surrounds the entire muscle.
What is the Epimysium?
This neurotransmitter is released at the neuromuscular junction to trigger a muscle contraction.
What is Acetylcholine (ACh)?
Unlike skeletal muscle, cardiac and smooth muscles are under this type of control.
What is Involuntary?
The chest muscle
What is the pectoralis major?
This is when the muscle is able to return to normal pre-exertion levels.
What is recovery period?
These are bundles of muscle fibers wrapped together by the perimysium.
What are Fascicles?
These ions are released from the sarcoplasmic reticulum and act as the "on switch" for muscle contraction.
What are Calcium ions?
While smooth muscle is found in many organs like the stomach, cardiac muscle is found in only this one specific organ.
What is the heart?
This is a triangular shaped muscle of the shoulder
What is the deltiod?
Max amount of tension produced by a muscle or muscle group.
What is force?
This specialized organelle within the muscle fiber stores and releases calcium ions.
What is the Sarcoplasmic Reticulum?
These "golf-club" shaped proteins bind to actin to form cross-bridges.
What is Myosin?
These are the two primary things smooth muscle controls in the body's blood vessels and airways.
What are Dilation and Constriction?
This large muscle on the front of the upper arm is famous for "flexing" and is used to bend the elbow.
What is the biceps?
This type of endurance is improved with low level of muscular activity.
What is aerobic endurance?
The functional unit of a skeletal muscle fiber, spanning from one Z-line to the next.
What is a Sarcomere?
Calcium binds to this specific protein to move tropomyosin away from active sites.
What is Troponin?
This term describes the fact that cardiac muscle can generate its own electrical impulse to beat without needing a signal from the brain.
What is Automaticity?
This muscle is on the back of your lower leg, commonly called the calf muscle.
What is the Gastrocnemius?
Amount of time one can perform a specific activity, this is one factor that determines the performance capabilities.
What is endurance?
These invaginations of the sarcolemma allow the electrical impulse to reach the interior of the muscle cell.
What are T-tubules?
This energy molecule is required to "recharge" the myosin head and is also the reason muscles can finally relax and let go of a contraction.
What is ATP?
This type of muscle tissue lacks striations because its filaments are not organized into sarcomeres.
What is smooth muscle?
The muscle that is most important to help with breathing.
What is the Diaphragm?
Produced in muscle cells during intense exercise, this byproduct causes a burning sensation.
What is lactic acid?