The proper spelling for the phrase "Bones of Upper Extremity" can be explained using the International Phonetic Alphabet (IPA). The initial sound in "bones" is represented by the voiced bilabial nasal /b/, followed by the open-mid back rounded vowel /o/. The consonant cluster "nes" is made up of the voiced alveolar nasal /n/ and voiceless alveolar fricative /s/. "Of" is pronounced /ʌv/ with the unstressed schwa sound /ə/. "Upper" is pronounced with the voiced bilabial fricative /v/ and the dental fricative /θ/, while "extremity" consists of the open-mid front unrounded vowel /ɛ/, the voiceless postalveolar fricative /ʃ/, and the voiced bilabial stop /p/.
The bones of the upper extremity refer to the skeletal structures that make up the upper limbs, including the arms, forearms, wrists, and hands. In human anatomy, the upper extremity is comprised of several bones that work together to provide support, mobility, and dexterity.
Starting from the shoulder, the upper extremity includes the humerus bone, which is the long bone of the upper arm connecting the shoulder to the elbow joint. Below the humerus, there are two bones in the forearm, namely the radius and ulna, which run parallel to each other. The radius is located on the same side as the thumb, while the ulna is found on the opposite side.
Moving further down, the wrist is formed by eight small carpal bones arranged in two rows. These carpal bones provide flexibility and stability to the hand. The metacarpals are found in the palm of the hand and connect the carpal bones to the phalanges.
Finally, the phalanges are the bones of the fingers and thumb. Each finger (except the thumb) has three phalanges: the proximal, middle, and distal phalanges. The thumb, on the other hand, only has two phalanges: the proximal and distal phalanges.
Together, these bones form the intricate skeletal system of the upper extremity, allowing individuals to perform a wide range of movements and activities with their hands and arms.