ABDUCTION
the action of moving a skeletal element away from the midline of the body
ACETABULUM
the socket of the hip joint; an articular surface that encompasses the head of the femur
ADDUCTION
the action of moving a skeletal element toward the midline of the body
ADOLESCENCE
considered to be between the ages of 12-24 years; the period of growth between puberty and complete fusion of the epiphysis of the long bones
ALLELE
a unit of hereditary information; an alternate form of a gene that sits at the same position on a chromosome
ALLOMETRY
the study of the relationship between the growth of an organism’s specific part(s) in relation to its entire body
ALVEOLUS
refers to tooth socket in the mandible or maxilla
AMINO ACID
chains of molecules that make up proteins. In total, there are 20 amino acids
ANALOGY
[adj. analogous] characteristics of organisms that are similar and share the same function(s), but are not the result of common ancestry
ANATOMIC POSITION
a position generally accepted as the natural stance for an organism. In bipedal hominins, the anatomic position is an upright, erect posture with the arms at the sides and the palms of the hands facing forward; in quadrupedal primates, the anatomical position is an upright, bent posture with all four limbs outstretched and palms flat on the ground
ANATOMY
the study of the structure of the body and the relationship to its parts
ANDERNACH’S OSSICLES
[syn. wormian bones] extra, small bones occuring within cranial sutures. Individual ossicles (small bone) are named for its associated suture. For example, an ossicle that is formed nearest the lambdoidal suture would be referred to as a lambdoidal ossicle
ANKYLOSIS
the fusion of two separate bony parts; an abnoram condition of a joint
ANTEMORTEM
the time period before death
ANTERIOR
a relative term used for bipedal hominins (those that travel on two legs) to describe features that are closer to the belly or front of the body; opposite of posterior. The term ventral is a synonym commonly used when referring to quadrupedal anatomy
ANTHROPOLOGY
the scientific study of humans, human culture, and the evolution of humans; subfields include archeology, cultural anthropology, linguistic anthropology, and physical anthropology
APERTURE
an opening or hole in a bone
ARCHAEOLOGY
the investigation of culture through the study of remains left by humans
ARCHAIC
ancient; old
ARTICULATED PELVIS
the right and left os coxae in proper anatomical contact with the sacrum
ARTICULATED SKULL
cranium and mandible in proper anatomical contact
ARTICULATION
the point where two or more bones are joined together. Some articulations are movable joints like the elbow or knee, while some are unmovable like the sutures between cranial bones
ARTIFACT
an object modified and/or used by hominins
ATLAS
fhe first cervical vertebrae
ATTRITION
the wearing away of a surface through grinding or friction; the gradual reduction in number or strength resulting from stress
AUDITORY MEATUS
opening in the temporal bone that is commonly referred to as the ear canal
AUTOSOME
[adj. autosomal] all chromosomes except for the sex chromosomes
AXIS
the second cervical vertebrae