For example, muscles that bend the elbow (biceps) are countered by muscles that straighten it (triceps). These countering movements are balanced. The balance makes movements smooth, which helps prevent damage to the musculoskeletal system. Skeletal muscles are controlled by...
For example, muscles that bend the elbow (biceps) are countered by muscles that straighten it (triceps). These countering movements are balanced. The balance makes movements smooth, which helps prevent damage to the musculoskeletal system. Skeletal muscles are controlled by the brain and ar...
You can raise straight overhead, then bend the elbow so that your right hand falls behind your head. Using your left hand, gently pull your right elbow toward the centerline of your body. Ideally, you want your right forearm to be straight up and town. Be sure to keep your head and ...
You can raise straight overhead, then bend the elbow so that your right hand falls behind your head. Using your left hand, gently pull your right elbow toward the centerline of your body. Ideally, you want your right forearm to be straight up and town. Be sure to keep your head and ...
Sometimes the muscle is not attached directly to the bone but to a tough, nonstretchable cord, or tendon, that is attached to the bone. Muscles do not push; they can only pull. To bend the arm at the elbow, the muscle at the front of the upper arm has to shorten and bunch up. ...
百度试题 结果1 题目7. When you bend your elbow, the muscles of the arm contract(contract) 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
The Posterior Compartment This compartment has two layers, superficial and deep. The muscles here mostly help you extend, or straighten, your fingers and wrists. Superficial layer The brachioradialis muscle allows you to bend your elbow -- for example, to lift a glass of water to your mouth...
Define Flexor muscles. Flexor muscles synonyms, Flexor muscles pronunciation, Flexor muscles translation, English dictionary definition of Flexor muscles. n. A muscle that when contracted acts to bend a joint or limb in the body. American Heritage® Di
The rotation of the forearm is accomplished by two muscles that cross the elbow: thepronator teresand thesupinator. The pronator teres crosses the elbow at an oblique angle from the medial epicondyle of the humerus to its insertion on the radius. When contracted, the pronator teres rotates the...
To bend the arm at the elbow, the muscle at the front of the upper arm has to shorten and bunch up. 要从肘部弯曲手臂,就要收缩上臂正面的肌肉。 To unbend the arm other muscles in the back of the arm have to shorten. 要伸直手臂,背面的肌肉就得收缩。 These two sets of muscles -...