Chapters 1 & 2 Flashcards
Anatomic Nomenclature
Based on the body being in anatomic position (Body standing erect, arms to sides, palms and toes facing forward, eyes looking forward
Anterior
The front of an area
Posterior
The back of an area
Superior
Toward the head, upper
Inferior
Toward the feet, lower
Ventral
Directed towards the anterior
Dorsal
Directed towards the posterior
Median plane
Divides body equally into right and left halves, aka midsagittal plane
Sagittal plane
Parallel to median plane, divides body into right and left, not equal halves
Frontal plane
Divides body into anterior and posterior parts
Horizontal plane
Divides body into superior and inferior parts, aka transverse plane
Lateral
Farther from the median plane
Medial
Closer to the median plane
Proximal
Closer to the median plane
Distal
Farther from the median plane
Ipsilateral
Structure on the same side of the body
Contralateral
Structure on the opposite side of the body
Superficial
Toward the surface of the body
Anatomic variation
The size, shape, and exact placement of muscles and bones vary from person to person
Frontal Region
Includes the forehead and the area above the eyes
Deep
Inward, away from the surface of the body
Glabella
Smooth elevated area between the eyebrows
Frontal eminence
Prominence of the forehead
Supraorbital ridge
Directly inferior to each eyebrow
Orbital Region
Includes the eyeball and its supporting structures
Orbit
The bony socket of the eye, formed by various skull bones
Sclera
The whites of the eyes
Iris
Central area of coloration of the eye
Pupil
The opening at the center of the iris
Lacrimal fluid
Tears
Conjunctiva
A thin membrane lining the inside of the eyelids and front of the eyeball
Lateral canthus
Laterally, where the upper and lower eyelids meet
Medial canthus
Medially, where the upper and lower eyelids meet
Nasal Region
Main feature is the external nose
Root of the nose
Located between the eyes
Nasion
Inferior to the labella, a landmark that corresponds with the junction of underlying bones
Bridge of the nose
Inferior to the nasion
Naris
Nostril (plural is nares)
Nasal septum
At the midline, separating the nares
Ala
Winglike cartilaginous structure bordering the nares
Infraorbital Region
Located inferior to the orbital region and lateral to the nasal region
Zygomatic Region
Located lateral to the infraorbital region and overlies the cheekbone
Zygomatic arch
Cheekbone
Temporomandibular joint (TMJ)
Where the upper skull forms a joint with the lower jaw
Buccal Region
Composed of the soft tissue of the cheek
Masseter muscle
Large muscle in the cheek, can be felt when teeth are clenched
Parietal and Occipital Region
Both regions covered by scalp, and defined by the deeper skull bones
Temporal Region
Includes the temple - superficial side of the head posterior to each eye, defined by deeper skull bones
Auricular Region
Prominent feature is the external ear
Auricle
The oval flap of the ear
External acoustic meatus
External opening of the “ear canal”
Helix
Superior and posterior free margin of auricle
Lobule
Fleshy protuberance of the earlobe