Skeletal Muscle
What is the nervous control of a skeletal muscle?
Voluntary
True or False: T tubules are numerous and located everywhere in cardiac muscle tissue
False; They are only located at the Z discs
What is the antagonist muscle to the triceps brachii?
Biceps brachii
This neurotransmitter is used by the somatic motor neuron at the neuromuscular juntion for muscle contraction
Acetylcholine
Muscle fiber type that uses high amount of oxygen and has high amount of myoglobin
Red muscle fibers, slow oxidative fibers, fast oxidative-glycolytic fibers
Name the unique characteristic of a skeletal muscle
Multinucleated
Smooth muscles are controlled by which nervous system
Autonomic Nervous System
Describe an effort, fulcrum, and load
Effort is the force (muscle), fulcrum is the joint, and load is the weight that opposes the movement.
True or False: The H band and I band shorten when the sarcomere shortens.
True
This skeletal muscle fiber type is mainly used during weightlifting
Fast glycolytic fibers (type IIb fibers)
List the connective tissue coverings of a skeletal muscle from deep to superficial
Endomysium, perimysium, epimysium
What connects each cardiac muscle fiber (cell) together to facilitate communication between the cells?
Gap junctions
The biceps brachii contracting to lift an object is which type of lever
Third-class lever
This regulatory protein covers the myosin binding site of the actin and only moves after ________ binds to it.
Regulatory protein: Tropomyosin
troponin
These skeletal muscle fiber types use aerobic cellular respiration
Slow oxidative fibers (type I fibers) and fast oxidative-glycolytic fibers (type IIa fibers)
Tendons are made up of what tissue subtype and what proteins are mainly present in it
Dense regular connective tissue, collagen
Which type of smooth muscle tissue is found in hollow viscera?
Visceral (single-unit) muscle tissue
A person is lowering a dumbbell to their sides after bringing it up to their chest. What kind of muscle contraction is this?
Eccentric
What type of protein is titin and what is its function?
This skeletal muscle fiber type is mainly used during a marathon
Slow oxidative fibers
A long, rope-like, flat sheet of muscle
Aponeurosis
Which connective tissue coverings do cardiac muscle tissues have?
Only endomysium and perimysium
The plank exercise is an example of what type of muscle contraction
Isometric
True or False: When ATP is hydrolyzed, the myosin head generates a power stroke.
False; A power stroke occurs when both phosphate and the ADP is released.
If a person starts engaging in more endurance-type exercises such as running or swimming, fast glycolytic fibers can gradually transform into which skeletal muscle fiber?
Fast oxidative-glycolytic fibers