Eccrine
/ˈɛkrɪn/
The most common type of sweat gland, found all over the body.
Ectoderm
/ˈɛktəˌdɜːrm/
The outermost layer of cells or tissue of an embryo in early development.
Effector
/ɪˈfɛktər/
An organ or cell that acts in response to a stimulus.
Efferent
/ˈɛfərənt/
Conveying away from a center, such as motor nerves carrying impulses from the brain.
Ejaculatory
/ɪˈdʒækjʊləˌtɔːri/
The duct through which semen is ejaculated.
Elastin
/ɪˈlæstɪn/
A protein forming the main constituent of elastic connective tissue.
Eleidin
/ɪˈliːɪdɪn/
A transparent intermediate product of keratin found in the stratum lucidum of the skin.
Elevation
/ˌɛlɪˈveɪʃən/
The upward movement of a body part, such as shrugging the shoulders.
Enamel
/ɪˈnæməl/
The hard, thin, translucent layer of calcified tissue that covers the crown of a tooth.
Encephalon
/ɛnˈsɛfəlɒn/
The brain; the part of the central nervous system contained within the cranium.
Endocardium
/ˌɛndoʊˈkɑːrdiəm/
The thin, smooth membrane which lines the inside of the chambers of the heart.
Endocrine
/ˈɛndəkrɪn/
Glands that secrete hormones directly into the blood rather than through a duct.
Endoderm
/ˈɛndəˌdɜːrm/
The innermost layer of cells or tissue of an embryo.
Endolymph
/ˈɛndoʊlɪmf/
The fluid contained in the membranous labyrinth of the inner ear.
Endometrium
/ˌɛndoʊˈmiːtriəm/
The mucous membrane lining the uterus.
Endomysium
/ˌɛndoʊˈmɪziəm/
The delicate connective tissue surrounding individual muscle fibers.
Endoneurium
/ˌɛndoʊˈnjʊəriəm/
A layer of connective tissue that surrounds the axons of a peripheral nerve.
Endosteum
/ɛnˈdɒstiəm/
A thin vascular membrane of connective tissue that lines the inner surface of bony tissue.
Endothelium
/ˌɛndoʊˈθiːliəm/
The tissue which forms a single layer of cells lining the blood vessels and heart.
Ependyma
/ɛˈpɛndɪmə/
The thin membrane of glial cells lining the ventricles of the brain.
Epicardium
/ˌɛpɪˈkɑːrdiəm/
The outer layer of the heart wall.
Epicondyle
/ˌɛpɪˈkɒndaɪl/
A protuberance above or on the condyle of a long bone.
Epidermis
/ˌɛpɪˈdɜːrmɪs/
The surface epithelium of the skin, overlying the dermis.
Epididymis
/ˌɛpɪˈdɪdɪmɪs/
A highly convoluted duct behind the testis, along which sperm passes.
Epiglottis
/ˌɛpɪˈɡlɒtɪs/
A flap of cartilage at the root of the tongue, which is depressed during swallowing.
Epimysium
/ˌɛpɪˈmɪziəm/
A sheath of fibrous elastic tissue surrounding a muscle.
Epineurium
/ˌɛpɪˈnjʊəriəm/
The outermost layer of connective tissue surrounding a peripheral nerve.
Epiphysis
/ɪˈpɪfɪsɪs/
The end part of a long bone, initially growing separately from the shaft.
Epithelium
/ˌɛpɪˈθiːliəm/
Tissue that lines the outer surfaces of organs and blood vessels.
Eponychium
/ˌɛpoʊˈnɪkiəm/
The thickened layer of skin at the base of a fingernail or toenail (the cuticle).
Erythrocyte
/ɪˈrɪθrəsaɪt/
A red blood cell that typically lacks a nucleus.
Esophagus
/ɪˈsɒfəɡəs/
The part of the alimentary canal that connects the throat to the stomach.
Ethmoid
/ˈɛθmɔɪd/
A square bone at the root of the nose, forming part of the cranium.
Eustachian
/juːˈsteɪʃiən/
The tube that connects the middle ear to the nasopharynx.
Eversion
/ɪˈvɜːrʒən/
The movement of the sole of the foot away from the median plane.
Exocrine
/ˈɛksəkrɪn/
Glands that secrete their products through ducts onto an epithelial surface.
Extension
/ɪkˈstɛnʃən/
A movement that increases the angle between two body parts.
Extensor
/ɪkˈstɛnsər/
A muscle whose contraction extends or straightens a limb or other part of the body.
External
/ɪkˈstɜːrnəl/
Situated on the outside or farther from the center.
Extraocular
/ˌɛkstrəˈɒkjʊlər/
Relating to the six muscles that control movement of the eye.