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ALPHABETICAL INDEX
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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TERMS AND DEFINITIONS
LINKS TO THE VIRTUAL HUMAN BODY
taeniae coli
Longitudinal bands of smooth muscle covering the large intestine along its entire length.

talus
Bone of the tarsus resting on the calcaneus and articulating with the tibia and fibula.

tarsus
All seven short bones (tarsals) forming the skeleton of the ankle.

teeth
Whitish, hard organs, borne by the maxilla and mandible and serving to chew food.

temple
Side of the head between the forehead, eye, cheek and ear.

temporal bone
Paired bone located in the lateral part of the skull, articulating with the mandible and having several bony protrusions.

temporal branches of facial nerve
Terminal branches of the facial nerve, innervating the auricular muscles.

temporal lobe
Cerebral lobe in the lateral part of the cerebral hemispheres, responsible for hearing, memory and behavior control.

temporal muscle
Muscle connecting the temporal fossa to the mandible; it allows the jaws to close by lifting the mandible.

temporal pole
Prominent rounded part of the anterior extremity of the temporal lobe.

temporomandibular joint
Synovial joint connecting the head of the mandible to the temporal bone; it allows the mouth to open and close.

tendinous cords
Small tendons connecting the free border of the tricuspid and mitral valves of the heart to the papillary muscles.

tendinous sheath of anterior tibial muscle
Synovial membrane covering the tendon of the anterior tibial muscle, between the superior retinaculum of the extensor muscles up to the talonavicular joint (between the talus and navicular bone).

tendinous sheath of common extensor of fingers and extensor of index muscles
Membrane covering the tendon of the common extensor of fingers and extensor of index muscles.

tendinous sheath of long abductor and short extensor muscles of thumb
Membrane covering the tendon of the long abductor and short extensor muscles of the thumb.

tendinous sheath of long extensor muscle of great toe
Serous membrane covering the long extensor muscle of the big toe, extending from the frondiform ligament to the dorsal fascia of the foot.

tendinous sheath of long extensor muscle of thumb
Membrane covering the tendon of the long extensor muscle of the thumb.

tendinous sheath of long extensor muscle of toes
Membrane covering the tendon of the long extensor muscle of the toes, between the superior retinaculum of the extensors and intermediate cuneiform bone.

tendinous sheath of long flexor muscle of thumb
Membrane covering the tendon of the long flexor muscle of the thumb, at the wrist and palm of the hand.

tendinous sheath of long flexor muscle of toes
Synovial membrane covering the long flexor tendon of the toes, between the medial malleolus and navicular bone.

tendinous sheath of posterior tibial muscle
Synovial membrane covering the tendon of the posterior tibial muscle, behind the medial malleolus and foot.

tendinous sheath of radial extensor muscles of wrist
Membrane covering the tendon of the short and long radial extensor muscles of the carpus.

tendinous sheath of short extensor muscle of little finger
Membrane covering the tendon of the short extensor muscle of the little finger.

tendinous sheath of ulnar extensor muscle of wrist
Membrane covering the tendon of the ulnar extensor muscle of the carpus.

tensor muscle of fascia lata
Muscle connecting the iliac crest to the anterior border of the fascia lata; it especially assists in the flexion and inner rotation of the thigh.

tenth rib
Third false rib.

tenth thoracic vertebra
Vertebra located between the ninth and eleventh thoracic vertebrae.

teres major muscle
Muscle connecting the scapula to the humerus; it allows the arm to rotate inward and move toward the axis of the body (adduction).

teres minor muscle
Muscle connecting the scapula to the humerus; it stabilizes the shoulder joint and allows the outer rotation of the arm.

terminal filum
Fibrous extension of the pia mater, extending from the extremity of the spinal cord to the coccyx.

testicle
Each of two male sex glands located in the scrotum, producing spermatozoa and secreting male hormones (testosterone).

testicular artery
Branch of the abdominal aorta, irrigating the testicle.

thalamus
All the many formations of gray matter located at the center of the brain.

thigh
Part of the lower limb between the hip and knee, corresponding to the femur.

third cervical vertebra
Vertebra located between the axis and the fourth cervical vertebra.

third fibular muscle
Muscle connecting the fibula to the fifth metatarsal; it allows forward flexion and outward rotation of the foot.

third lumbar vertebra
Vertebra located between the second and fourth lombar vertebrae.

third metacarpal
Bone of the metacarpus, articulating with the capitate bone and the proximal phalange of the middle finger.

third metatarsal
Bone of the metatarsus, articulating with the lateral cuneiform bone and proximal phalanx of the third toe.

third occipital nerve
Twig of the third cervical nerve, innervating the upper part of the scalp.

third rib
Third true rib.

third sacral vertebra
Vertebra fused to the sacrum, located between the second and fourth sacral vertebrae.

third thoracic vertebra
Vertebra located between the second and fourth thoracic vertebrae.

thoracic aorta
Third section of the aorta, located in the thoracic cage.

thoracic cage
Bony structure consisting of 12 pairs of ribs, 12 thoracic vertebrae and the sternum.

thoracic duct
Vessel arising from the cisterna chyli and carrying lymph from most of the body to the terminal point of the left subclavian vein.

thoracic ganglia
Sympathetic ganglia forming two vertical chains on the anterior side of the vertebral column at the thorax.

thoracic nerves
All 12 pairs of spinal nerves, innervating the thorax and back and whose ventral branches are intercostal nerves.

thoracic vertebrae
Vertebrae (12) supporting the ribs at the thorax.

thoracoacromial artery
Branch of the axillary artery, irrigating the skin and shoulder muscles on the anterior superior part of the thorax.

thoracoacromial vein
Vein running along the shoulder and upper part of the thorax to the axillary vein.

thoracodorsal artery
Branch of the subscapular artery, irrigating the subscapular and round muscles.

thoracodorsal nerve
Nerve arising from the brachial plexus, innervating the latissimus dorsi muscle.

thoracoepigastric veins
Veins of the torso, emptying into the lateral thoracic vein.

thoracolumbar fascia
Fascia covering the deep muscles of the back.

thorax
Upper part of the trunk, above the diaphragm, especially containing the heart and lungs.

thumb
First digit of the hand, short and strong, made up of two mobile phalanges and opposable to the other digits to enable grasping.

thyrocervical trunk
Artery arising from the subclavian artery and diving into four branches: inferior thyroid artery, suprascapular artery, transverse cervical artery and ascending cervical artery.

thyroepiglottic ligament
Ligament connecting the epiglottis to the thyroid cartilage.

thyrohyoid membrane
Membrane connecting the thyroid cartilage and hyoid bone.

thyroid cartilage
Connective tissue composed of two lateral laminae whose juncture, on the anterior part of the larynx, forms a very visible protrusion in man (Adam’s apple).

tibia
Long, very large paired bone, articulating with the femur and talus and forming, with the fibula, the skeleton of the leg.

tibial collateral ligament
Ligament extending from the femur to the tibia, on the medial side of the knee, assisting in stabilizing the joint.

tibial nerve
Branch of the sciatic nerve, innervating the posterior muscles of the leg and the sole of the foot.

tibial tuberosity
Bony protrusion of the tibia, on which the rotulian tendon inserts.

toes
Extensions of the foot, made up of several articulated bones (phalanges), whose terminal end is covered with a nail.

tongue
Mobile fleshy organ located in the mouth and involved in tasting, chewing and talking.

trabeculae carneae of left ventricle
Muscular bands of the wall of the left ventricle of the heart.

trabeculae carneae of right ventricle
Muscular bands of the wall of the right ventricle of the heart.

trachea
Muscular cartilagenous channel allowing the passage of air between the larynx and bronchi.

tracheal bifurcation
Area of the trachea dividing into the main right and left bronchi.

tracheal cartilages
Cartilaginous rings (16 to 20) contained in the wall of the trachea, allowing it to remain open.

tragus
Flat triangular eminence located in front of the opening of the external auditory meatus.

transverse abdominal muscle
Muscle covering the lateral part of the abdomen, especially connecting the last costal cartilages and the iliac crest to the linea alba; it compresses the viscera of the abdomen.

transverse arytenoid muscle
Muscle of the larynx, connecting the arytenoid cartilages and allowing the glottis to close.

transverse branch of lateral circumflex femoral artery
Branch of the lateral circumflex femoral artery, especially irrigating the lateral vastus muscle.

transverse cervical artery
Branch of the thyrocervical trunk, irrigating the clavicle, scapula and upper shoulder muscles.

transverse cervical nerve
Nerve arising from the cervical plexus, innervating the lateral and anterior parts of the neck.

transverse colon
Horizontal segment of the colon between the ascending colon and descending colon.

transverse ligament of knee
Ligament connecting the lateral and medial menisci.

transverse sinus
Vessel arising from the confluence of the sinuses and extended via the sigmoid sinus.

trapezium bone
Bone of the lower row of the carpus, articulating with the first metacarpal.

trapezius muscle
Triangular muscle connecting the occipital bone and certain cervical and thoracic vertebrae to the clavicle, acromion and spine of the scapula; it allows numerous movements of the shoulder and assists in extension of the head.

trapezoid bone
Bone of the lower row of the carpus, articulating with the second metacarpal.

triceps of arm
Muscle having three heads, forming the posterior side of the arm and allowing extension of the forearm and elbow.

tricuspid valve
Elastic structure preventing reverse flow of the blood of the right ventricle to the right atrium.

trigeminal nerve
Mixed cranial nerve transmitting facial sensations to the brain and playing a role in chewing.

trigone of urinary bladder
Area of the bladder bordered by the two ureteric orifices and neck of the urinary bladder.

triquetral bone
Bone of the upper row of the carpus, articulating with the ulna at the wrist.

trochlea of humerus
Lower extremity of the humerus, articulating with the trochlear notch of the ulna.

trochlear nerve
Cranial nerve, mainly motor, involved in certain eye movements.

true ribs
Ribs (7 pairs) having their own costal cartilage, located in the upper part of the thoracic cage.

trunk
Part of the body formed by the thorax and abdomen, to which the head and limbs are attached.

twelfth rib
Second floating rib, forming the lower extremity of the thoracic cage.

twelfth thoracic vertebra
Last thoracic vertebra, located between the eleventh thoracic vertebra and the first lombar vertebra.