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What acts as both a knee (leg) extensor and hip (thigh) flexior?
The three muscles that make up the hamstring muscle group: the bicep femoris, semitendinosus and semimembranosus and the rectus femoris, one of the quadriceps muscles, all act as knee extensors and hip flexors.
What acts as an antagonist to the rectus femoris?
The primary antagonist to the rectus femoris is the biceps femoris, a muscle of the hamstring group. When the rectus femoris contracts to flex the hip and extend the knee, the biceps femoris acts to flex the knee and extend the hip, helping to create balanced movement.
The groups of muscles collectively called the hamstring muscles include the?
the hamstring muscles must have these features:they must originate from the ischial tuberosity. they must be inserted into either tibia or fibula.they must not have any attachment to the femur.they must be supplied by the tibial part of the sciatic nerve.they must acts as extensor of the hip joint and flexor of the knee joint.with the above qualifications, the following muscles are considered as the hamstring muscles:semimembranosus.semitendinosus.both are (extensors of hip & flexors & medial rotators of knee joint). long head of biceps femoris
What does acetycholine do to muscles?
Acetylcholine acts to excite skeletal muscles, allowing for the muscle to contract. It also serves to allow contractions in the smooth muscles, while slowing down the cardiac muscles
What is sternocleidomastaid?
Correct spelling being "sternocleidomastoid", it is a paired muscle in the superficial layers of the anterior portion of the neck. It acts to flex and rotate the head. It also acts as an accessory muscle of inspiration, along with the scalene muscles of the neck.
The acts synergistically with the masseter to elevate the mandible?
The masseter IS the functional muscle which closes the mandible (jaw).
Is a bicep a type of arm muscle?
Bicep translates from latin to mean "two heads" and this describes the most notable feature of the muscle. The biceps brachi is one of the muscle in the arm that acts on the elbow joint to suppinate (primary function) and to flex (secondary function) the forearm. There is however another biceps muscle in the body, this is why the one in the arm is given the full name "biceps brachi" to deistinguish it from the "biceps femoris". This muscle is again two headed but this time is is present on the femur, the bone in the thigh. It is one of the three muscles that forms the hamstring and as such it is involed in the flexion of the knee joint.
An unpaired muscle that acts with the muscle to accomplish inspiration?
Inspiration is due to the contraction of the diaphragm and external intercostal muscles.
What muscle synergist is used for supination of the hand?
The biceps brachii muscle acts as a synergist for supination of the hand. It works in coordination with other muscles, such as the supinator muscle, to rotate the forearm and bring the palm facing upwards.
How do muscles move?
Muscles move by contraction. When the cells shorten, the muscle pulls on the ligaments that connect the bones and the movable body parts. Depending on how a skeletal muscle acts, it may be classified as a flexor (decreases angle to joint) or an extensor (increases angle, straightening the joint).
What is baclofen prescribed for?
Source: rx2040. com Baclofen is used for treating spasm of skeletal muscles, muscle clonus, cramping of muscles, rigidity, spinal cord injury and pain caused by disorders such as multiple sclerosis. Baclofen acts by relaxing skeletal muscles, the muscles that move the skeleton (and also called striated muscle).
What Is the circular muscle that acts as a valve opening and closing to allow the gastric contents to move throughout the GI tract.?
Circular muscles are called sphincters, there are many different sphincter muscles in the human body.
