This question is too general - what part of the human body would you prefer to be described in medical terms?
For example, the three bones of the arm are: the humerus, radius, and ulna; of the leg, the bones are: the femur, tibia, and fibula.
Some common diseases: cholecystitis, appendictiis, tonsillitis, Crohn's disease. These would be diagnoses.
How about - levator labii superioris alaeque nasi - describes the nostril
onychophagia == nail-biting
Transurethral, transabdominal, transesophageal, and transvaginal are medical terms that start with Trans.
Not all medical terms have a word root. Some medical terms may only consist of a prefix and/or a suffix without a word root.
Subhepatic, subtalar, and submandibular are medical terms with the prefix "sub-."
Hypodermic, hypochondria, hypothryroidism, hypoandrogenism, hypoestrogenic, hypochromic are medical terms with the prefix hypo-.
Most med terms are based on Latin and some are ancient Greek.
HOTH means hypothyroid when used in medical terms. Hypothyroid means that the thyroid is not producing the amount of thyroid hormone for some reason.
Ischemia, onycholysis, pertussis, epigastric, retroperitoneal, tonsillitis.
Hyperopia, myopia, and diplopia are some medical terms meaning a type of vision.
Medical terms used by the medical profession in caring for patients.
Some health care providers are more likely to give shots in the left arm because right-handedness is more common. There is no reason to have a preference in medical terms.
In medical terms, stool means feces.
Inspiration in medical terms means inhaling.