Body Parts
- vena cava
- either of two large veins that return oxygen-depleted blood to the right atrium of the heart
- channel
- a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
- accessory nerve
- arises from two sets of roots (cranial and spinal) that unite to form the nerve
- geniculate body
- one of four small oval masses that protrude slightly from the underside of the thalamus and function as synaptic centers on the way to the cerebral cortex
- auditory canal
- either of the passages in the outer ear from the auricle to the tympanic membrane
- sternocleido mastoideus
- one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head
- musculus sphincter ani internus
- an internal ring of smooth muscle formed by circular fibers of the rectum
- gliding joint
- a freely moving joint in which the articulations allow only gliding motions
- transverse muscle of abdomen
- a flat muscle with transverse fibers that forms the anterior and lateral walls of the abdominal cavity
- plica vocalis
- either of two pairs of folds of mucous membrane projecting into the larynx
- ascending colon
- the part of the large intestine that ascends from the cecum to the transverse colon
- tonsil
- either of two masses of lymphatic tissue one on each side of the oral pharynx
- inguen
- the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals
- obturator vein
- a vein formed by the union of tributaries that drain the hip joints and thigh muscles; empties into the internal iliac vein
- halter
- either of the rudimentary hind wings of dipterous insects; used for maintaining equilibrium during flight
- naris
- any of the openings to the nasal cavities that allow air to flow through the cavities to the pharynx
- reflex arc
- the neural path of a reflex
- perforated eardrum
- an eardrum with a hole or tear in it; can interfere with normal hearing and cause other ear problems
- vertebral artery
- the first branch of the subclavian artery; divided into four parts
- parapodium
- one of a pair of fleshy appendages of a polychete annelid that functions in locomotion and breathing
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