Abdomen
/ˈæbdəmən/
The part of the body between the thorax and the pelvis.
Abductor
/æbˈdʌktər/
A muscle that moves a limb away from the midline of the body.
Acetabulum
/ˌæsɪˈtæbjʊləm/
The socket of the hipbone where the head of the femur fits.
Acromion
/əˈkroʊmiən/
The lateral extension of the spine of the scapula, forming the point of the shoulder.
Adductor
/əˈdʌktər/
A muscle that moves a limb toward the midline of the body.
Adenohypophysis
/ˌædɪnoʊhaɪˈpɒfɪsɪs/
The anterior lobe of the pituitary gland.
Adipose
/ˈædɪpoʊs/
Connective tissue used for the storage of fat.
Adrenal
/əˈdriːnəl/
Glands located above the kidneys that produce hormones like adrenaline.
Afferent
/ˈæfərənt/
Carrying toward a center, such as sensory nerves heading to the brain.
Agonist
/ˈæɡənɪst/
A muscle whose contraction is directly responsible for producing a specific movement.
Alimentary
/ˌælɪˈmɛntəri/
Relating to nourishment or the digestive tract.
Alveoli
/ælˈviːəlaɪ/
Tiny air sacs in the lungs where gas exchange occurs.
Alveolus
/ælˈviːələs/
A small cavity or pit, such as a tooth socket or lung air sac.
Amphiarthrosis
/ˌæmfiɑːrˈθroʊsɪs/
A type of joint that allows only slight movement.
Amygdala
/əˈmɪɡdələ/
Almond-shaped cluster of neurons in the brain involved in memory and emotion.
Anastomosis
/əˌnæstəˈmoʊsɪs/
A cross-connection between adjacent channels, tubes, or fibers.
Anatomical
/ˌænəˈtɒmɪkəl/
Relating to the structure of the body.
Anconeus
/ænˈkoʊniəs/
A small muscle on the posterior aspect of the elbow joint.
Annulus
/ˈænjʊləs/
A ring-shaped structure or part.
Antagonist
/ænˈtæɡənɪst/
A muscle that opposes the action of another.
Anterior
/ænˈtɪəriər/
Nearer the front or situated in the front of the body.
Antrum
/ˈæntrəm/
A natural chamber or cavity within a bone or other structure.
Anus
/ˈeɪnəs/
The opening at the end of the alimentary canal through which solid waste leaves.
Aorta
/eɪˈɔːrtə/
The main artery of the body, supplying oxygenated blood to the circulatory system.
Apex
/ˈeɪpɛks/
The top or highest part of something, especially one forming a point.
Aponeurosis
/ˌæpənjʊˈroʊsɪs/
A sheet of pearly-white fibrous tissue that takes the place of a tendon.
Apparatus
/ˌæpəˈreɪtəs/
A group of organs that work together to perform a particular function.
Appendicular
/ˌæpənˈdɪkjʊlər/
Relating to the limbs (arms and legs).
Appendix
/əˈpɛndɪks/
A tube-shaped sac attached to and opening into the lower end of the large intestine.
Aqueduct
/ˈækwɪdʌkt/
A canal or passage in the body filled with fluid.
Aqueous
/ˈeɪkwiəs/
Consisting of or similar to water; the humor in the eye.
Arachnoid
/əˈræknɔɪd/
The middle layer of the three membranes (meninges) that surround the brain.
Areola
/əˈriːələ/
The small darkened area around the nipple of the breast.
Arrectores
/əˌrɛkˈtɔːriːz/
Small muscles attached to hair follicles (goosebump muscles).
Arteriole
/ɑːrˈtɪərioʊl/
A small branch of an artery leading into capillaries.
Artery
/ˈɑːrtəri/
Blood vessels that deliver oxygen-rich blood from the heart to the tissues.
Articular
/ɑːrˈtɪkjʊlər/
Relating to a joint.
Articulation
/ɑːrˌtɪkjʊˈleɪʃən/
A fixed or movable joint between bones.
Arytenoid
/ˌærɪˈtiːnɔɪd/
Paired cartilages in the larynx to which the vocal cords are attached.
Ascending
/əˈsɛndɪŋ/
Moving upward, such as the portion of the colon or aorta.
Aspera
/ˈæspərə/
Referring to the Linea Aspera, a rough ridge on the posterior femur.
Asterion
/æsˈtɪəriən/
The point on the skull where the temporal, parietal, and occipital bones meet.
Astragalus
/æˈstræɡələs/
An older term for the talus bone in the ankle.
Atlas
/ˈætləs/
The first cervical vertebra of the spine, supporting the head.
Atloaxoid
/ˌætləʊˈæksɔɪd/
Relating to the joint between the atlas and the axis vertebrae.
Atrium
/ˈeɪtriəm/
One of the two upper chambers of the heart.
Atrophy
/ˈætrəfi/
Waste away, typically due to the degeneration of cells.
Auditory
/ˈɔːdɪtəri/
Relating to the sense of hearing.
Auricle
/ˈɔːrɪkəl/
The visible part of the ear or a small muscular pouch in the heart.
Autonomic
/ˌɔːtəˈnɒmɪk/
The part of the nervous system responsible for involuntary functions.
Axilla
/ækˈsɪlə/
The armpit.
Axillary
/ˈæksɪlɛri/
Relating to the armpit.
Axis
/ˈæksɪs/
The second cervical vertebra, which allows the head to rotate.
Axon
/ˈæksɒn/
The long threadlike part of a nerve cell that conducts impulses.
Azygos
/ˈæzɪɡəs/
An unpaired vein that drains the thoracic wall.