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The key to understandis the red nucleus situated in the mesencephalon.
These bilateralnucleiinfluence onlythe upper limbs increasing, if working properly, the muscular flexor tone.
Strokes sparing the brainstem, and so the red nuclei,will cause upper limb flexion.By contrast, lesionsinvolving the red nucleus or itsprojectionswill cause upper limb extension.
The lower limbs are not affected by the red nuclei. They undergo just the control of the cortex, that normally inhibits the extensor tone of the lower limbs. A stroke blocking this control will cause lower limbs extension.
Depending on the location, different results are so expected.
Upper limb flexion and lower limb extension are common patterns seen in stroke patients due to the differential involvement of motor pathways in the brain. The upper limb flexion typically results from the loss of inhibitory control from the stroke-affected hemisphere, while the lower limb extension can occur due to spasticity and abnormal reflexes in the lower extremities. These patterns are a result of the disruption in the brain's ability to control movement and are often seen in the acute phase of a stroke.
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Is seated rows a flexion or extension?
Seated rows are a form of back exercise that involve pulling a weight towards the body while sitting down. This movement primarily targets the muscles of the upper back and arms. It is considered an extension exercise because it involves extending the arms back towards the body.
What are flexors and extensors in the upper arm?
Flexors are muscles that bend the elbow or wrist in the upper arm, such as the biceps brachii. Extensors are muscles that straighten the elbow or wrist in the upper arm, such as the triceps brachii. These muscles work together to allow for various movements in the arm.
What does flexion of the elbow cause to angle of the joint?
Flexion causes the angle of the elbow to decrease because you are moving your forearm closer to your bisep therefore the angle decreses. Extension is making the angle bigger for example, straightening you arm, you are extending your arm so that is where the term comes from
Where does flexion of the arm occur?
Flexion of the arm occurs at the elbow joint, where the forearm moves closer to the upper arm.
What extension of the lower arm is a result of the contraction of?
The extension of the lower arm is a result of the contraction of the triceps muscle, which is located on the back of the upper arm. When the triceps contracts, it straightens the arm by extending the elbow joint.
Bending the lower arm up towards the upper arm?
it is called curl
What is trunk bending?
Trunk bending refers to the movement of the torso forward, backward, or sideways. It involves flexion, extension, or lateral flexion of the spine to bring the upper body closer to the lower body or to move it away from the midline. Trunk bending exercises are common in fitness routines to improve core strength and flexibility.
What is it called if the lower leg is straightened away from the upper leg?
extension
Is seated rows a flexion or extension?
Seated rows are a form of back exercise that involve pulling a weight towards the body while sitting down. This movement primarily targets the muscles of the upper back and arms. It is considered an extension exercise because it involves extending the arms back towards the body.
Bending the knee joint to bring the lower-leg and upper-leg bones closer together?
This movement is called knee flexion. It is controlled by the hamstrings at the back of the thigh and the calf muscles. The knee joint flexes to allow the leg to bend and bring the lower leg towards the upper leg.
What does the word hyperextension mean?
Hyperextension means the extension of a joints, muscles or tendons past their normal range of movement.In exercise routines it is a workout routine that extends the spinal region, the lower, mid and upper back especially the erector spinae. These are the large group of muscles that are the main movers of extension, lateral flexion and rotation of the spine.
What are flexors and extensors in the upper arm?
Flexors are muscles that bend the elbow or wrist in the upper arm, such as the biceps brachii. Extensors are muscles that straighten the elbow or wrist in the upper arm, such as the triceps brachii. These muscles work together to allow for various movements in the arm.
Which of the following is an example of a pivotal joint?
the joint that joins the skull to the first vertebra
What does flexion of the elbow cause to angle of the joint?
Flexion causes the angle of the elbow to decrease because you are moving your forearm closer to your bisep therefore the angle decreses. Extension is making the angle bigger for example, straightening you arm, you are extending your arm so that is where the term comes from
What are the major muscles of the muscular system?
Femour muscle,calf mucle,=====================================================The major muscles of the body would be:A) Anterior Upper Body:Pectoralis Major (involved with shoulder horizontal adduction and internal rotation)Deltoid Anterior, Middle and Posterior Fibers (shoulder flexion, abduction , horizontal abduction respectively)Rectus Abdominal (abs) (Flexion of the trunk)Oblique Muscles (lateral rotation of the trunk and pelvis)B) Posterior Upper Body:Latismuss Dorsi (shoulder extension and external rotation)Trapezius (Upper fibers raises the scapula upwards also involves with movement of the neck, while middle and lower fibers retract it)C) Arms:Biceps brachii (forearm flexion and supination, aids in shoulder flexion thru long head)Triceps brachii (elbow extension)Wrist Flexors and extensorsD) Pelvis and Hips:Glutues Maximus ( Hip Extension)Iliopsoas (Hip Flexion)Tensor Fascia lata , Glutues Medius and Minus (Hip Abduction, Stabilize body during walking)Hip AdductorsRectus femoris and Quadriceps (Knee Extension, Rectus Femoris aids in Hip Flexion)Hamstrings (Knee Flexion, Biceps Femoris aids in Hip Extension)Calf Muscles (mainly Gastrocnemius involved in ankle planter flexion)although there are many other skeletal muscles with major functions (e.g Rotator cuff: stabilize shoulder joint , and Anconeus which stabilize elbow joint.. and many more) these ones above are considered the major muscles of the body by many
Where does flexion of the arm occur?
Flexion of the arm occurs at the elbow joint, where the forearm moves closer to the upper arm.
What extension of the lower arm is a result of the contraction of?
The extension of the lower arm is a result of the contraction of the triceps muscle, which is located on the back of the upper arm. When the triceps contracts, it straightens the arm by extending the elbow joint.
