Rio Salado Bio 201 Exam 2 Latest Update 2025- 2026 Exam 125 Questions with 100% Verified Correct Answers Guaranteed A+
Acetylcholine - CORRECT ANSWER: A neurotransmitter substance released at motor
end plates by the axonal endings
acetylcholinesterase - CORRECT ANSWER: Destroys ACh
Actin - CORRECT ANSWER: has a kidney-shaped polypeptide subunits called G actin
Adductor muscles - CORRECT ANSWER: adduct, and medially rotate and flex the thigh
Aerobic respiration - CORRECT ANSWER: A metabolic pathway that provides for a
large amount of ATP per glucose because oxygen is used. Products are water and carbon dioxide and ATP.
Amphiarthrosis - CORRECT ANSWER: slighty moveable joints
An individual has just ingested a chemical that binds irreversibly to the ACh receptors in the sarcolemma. By itself it does not alter membrane potential, yet prevents normal neurotransmitter binding. Ignoring the effects on any other system, the consequence to
skeletal muscle would be - CORRECT ANSWER: no contraction at all by nervous
mechanisms, but contraction if stimulated by an external electrode
angular movement - CORRECT ANSWER: increasing and decreasing angles
(flex/extend, abd/add, etc)
Antagonist - CORRECT ANSWER: muscles that oppose a particular movement
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Ball and Socket joint - CORRECT ANSWER: multiaxial, shoulder and hip joints
Biceps brachii - CORRECT ANSWER: flexes elbow and supinates the forearm
Biceps femoris - CORRECT ANSWER: extends the thigh, and flexes the knee
Brachialis - CORRECT ANSWER: major arm flexo
Brachioradialis - CORRECT ANSWER: the synergist of brachialis in forearm flexion
Buccinator - CORRECT ANSWER: compresses the cheek
buccinator - CORRECT ANSWER: Helps keep food between the grinding surfaces of
the teeth during chewing
Bursitis - CORRECT ANSWER: inflammation of the bursa, usually caused by a blow or friction, common in knee
calcium ions - CORRECT ANSWER: Serves as the actual "trigger" for muscle contraction by removing the inhibition of the troponin molecules. Normally stored in the terminal cisternae
cardiac muscle - CORRECT ANSWER: walls of the heart, branching chains of uni or
binucleate cells
Carpal bones - CORRECT ANSWER: trapezium, trapezoid, capitate, hamate, scaphoid, lunate, triquetrum, pisiform
cartilage tears - CORRECT ANSWER: tears and overuse damage that articular
cartilage, most involving the knee, fixed with arthroscopic surgery
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