radial and brachial
You can not run without moving your upper limbs in contra lateral positions to lower limbs. (Try to run with upper limbs tied to your body.) Importance of running in football needs no comment. Also imagine the goalkeeper not using his upper limbs!
The bones of the lower limbs are larger and heavier than the bones of the upper limbs because they must support the body's weight and provide stability during activities like walking, running, and jumping. The lower limbs also have larger muscle groups attached to them, which contribute to their increased size and strength compared to the upper limbs.
Upper limbs have arms, hands, and fingers, while lower limbs have legs, feet, and toes. Both upper and lower limbs are important for various activities such as movement, balance, and fine motor skills.
The arms are often referred to as upper limbs or upper extremities, while the legs are referred to as lower limbs or lower extremities.
Without using your upper limbs, you can not run. You can use upper limbs without using your triceps. The world record of 100 meters is little less than 9 seconds. Without using upper limbs, that record will go up to 15 seconds, probably.
your arms are the upper limbs and your legs are the lower limbs :)
locomotion which means movement.
Cervical enlargement
The brachial plexus is the spinal cord feature associated with the leash of nerves supplying the upper limbs.
The cervical enlargement contains nerves that supply the upper limbs, shoulders, and neck muscles. It is responsible for coordinating motor function in this area of the body.
An "extremity" refers to your limbs (arms and legs). Lower extremities are your legs; upper extremities are your arms.
Upper limbs= Scapula, clavical, humerus, radius, ulnar, 8 carpals, 5 metacarpals and 14 phalanges Xs 2= 64. Lower limbs= Coxal, femur, patella, tibia, fibula, 7 tarsals, 5 metatarsals and 14 phalanges Xs 2= 62.