Charise is doing biceps curls with light weight dumbbells. Charise usually lifts 30 pound dumbells, but today she is taking it easy and lifting 10 pound dumbbells. What is happening in Charise’s biceps brachii muscle during her workout?Multiple ChoiceAll of the muscle fibers in Charise’s biceps brachii are being recruited to contract.Since the dumbbells are light, only small motor units are recruited to contract.The tension Charise is producing in her biceps brachii is greater than the load of the dumbbell.Contraction of her biceps brachii occurs through shortening of myosin and actin filaments.

What muscle works in a pair with the biceps brachii?Multiple Choicethe triceps brachiithe trapeziusthe masseterthe pectoralis majorthe sartorius

What is the action of the biceps brachii?Multiple choice question.extends shoulder; extends the elbowextends shouldersupination; flexes shoulder and elbow

The biceps brachii  extends the elbow joint   supinates the forearm   is in the posterior compartment of the upper arm   extends the shoulder joint   is a single-joint muscle

The biceps brachii is ______ to the brachialis muscle.Multiple choice question.superficialdistaldeeplateral

When the biceps brachii of the arm contracts, the angle between the bones of the forearm and humerus decreases, what type of contraction is this?Multiple choice question.AbductionExtensionFlexionAdduction