The limbs are made up of bones, muscles, tendons, ligaments, and blood vessels. The bones are connected by joints, which allow the limbs to move. The muscles are attached to the bones by tendons, which pull on the bones to move them. The ligaments help to keep the joints in place. The blood vessels supply the limbs with oxygen and nutrients, and remove waste products.
The limbs are important for a variety of activities, including walking, running, climbing, reaching, and grasping. They are also used for communication, such as waving, pointing, and gesturing.
Here is a more detailed look at the limbs of the human body:
Upper limbs (arms)
The upper limbs are attached to the shoulder girdle, which is made up of the scapula (shoulder blade) and the clavicle (collarbone). The arm consists of the humerus, which is the longest bone in the upper limb. The forearm consists of the ulna and radius, which are two bones that run parallel to each other. The hand is made up of the carpal bones, which are eight small bones that form the wrist, and the metacarpal bones, which are five long bones that form the palm of the hand. The fingers are made up of the phalanges, which are fourteen small bones that form the individual fingers.
Lower limbs (legs)
The lower limbs are attached to the pelvic girdle, which is made up of the hip bones (coxae) and the sacrum. The thigh is made up of the femur, which is the longest bone in the lower limb. The leg consists of the tibia and fibula, which are two bones that run parallel to each other. The foot is made up of the tarsal bones, which are seven small bones that form the ankle, and the metatarsal bones, which are five long bones that form the sole of the foot. The toes are made up of the phalanges, which are fourteen small bones that form the individual toes.
The limbs are complex structures that are essential for a variety of activities. They are a marvel of engineering and design, and they allow us to perform a wide range of movements and activities.