The origin of a muscle in a limb is usually at the movable end usually proximal
ID: 165907 • Letter: T
Question
The origin of a muscle in a limb is usually at the movable end usually proximal A muscle tendon connected to the bone by a ligament all of the above is dense fibrous connective tissue connects a muscle to another muscle connects bone to bone is only present at the origin Skeletal muscle cells have membranes called sarcomeres have channels called sarcoplasmic reticulum have cytoplasm called cisternae have all of these "Hamstrings" include biceps femora's, semimembranosus, and semitendinosus are on the anterior thigh function to extend the leg all of the above are true the extensors of the wrist are on posterior side of antebrachium are on the crore are on the posterior brachium are on anterior side of antebrachium the quadriceps femora's is so named because it forms a rectangle, like a quadrangle it has four functions it has four separate muscles it was originally discovered in four different cadavers If there is no available calcium tropomyosin doesn't move off the active site myosin can't bind with it contraction occurs more readily actin cross bridges can't connect Calcium is stored in T-tubules stored in transverse tubules stored in endoplasmic reticulum stored in terminal costumeExplanation / Answer
Ans:
1.The origin of a muscle in a limb is usually proximal.
Explanation:
-Muscles span joint and their purpose is to affect movement of that joint.
-Typically,muscles origin is the more fixed or stable point of attachment to bone,while insertion is on the bone which moves when contraction or relaxation of that muscles occurs.
-The origin of muscle of limb is usually at proximal end of muscle.
-The distal end being the insertion.