Muscle Types
Which connective tissue functions a broad, flattened tendon (FINAL JEOPARDY)
What is an aponeurosis?
Ion released from the sarcoplasmic reticulum that initiates muscle contraction
What is Ca2+
Movement that decreases the angle between bones at a joint
Prime mover of elbow flexion on the anterior arm
What is biceps brachii?
The functional unit of a muscle fiber
What is a sarcomere?
Involuntary muscle lacking striations and found in visceral organs
What is smooth muscle?
Protein that blocks the myosin binding sites on actin in a relaxed muscle
What is tropomyosin?
Movement of the foot upward towards the shin
What is dorsiflexion?
Primary extensor of the forearm on the posterior arm
What is triceps brachii?
Connective tissue sheath surrounding a muscle fascicle?
What is the perimysium?
Muscle type containing intercalated discs for synchronized contractions
What is cardiac muscle?
Regulatory protein calcium binds to, causing tropomyosin to move
What is troponin?
Movement returning a limb toward the body's midline
What is adduction?
Muscle group responsible for knee extension on the anterior thigh
What is the quadriceps femoris?
Specialized smooth ER that stores calcium ions
What is the sarcoplasmic reticulum?
Muscle type primarily regulated by the autonomic nervous system
What is smooth and cardiac muscles?
Phase of contraction where ATP binding causes myosin to detach from actin
What is cross-bridge detachment?
Rotational movement of the forearm, causing the palm to face posteriorly
What is pronation?
Large posterior muscle that extends and adducts the arm
What is the latissimus dorsi?
Junctions where a motor neuron communicates with a muscle fiber
What is a neuromuscular junction?
Muscle type most resistant to fatigue due to high mitochondrial density
What is cardiac muscle?
Sarcomere region that shortens during contraction, while the A band remains unchanged
What is the I band?
Movement combining flexion, extension, abduction and adduction
What is circumduction?
Posterior thigh muscle group that flexes the knee
What are the hamstrings?
Neurotransmitter released to trigger muscle contraction
What is acetylcholine?