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10 Cards in this Set
- Front
- Back
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RIGHT LYMPHATIC DUCT
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4. Right lymphatic duct: formed by the union of the right jugular, right
subclavian, and right bronchomediastinal trunks; immediately after its formation it empties into the angle of junction of the right subclavian and right internal jugular veins |
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THYROID GLAND
LOBES |
A. Thyroid gland
1 Lobes: located anterolaterally, between the oblique line of the thyroid cartilage ofthe larynx and fifth tracheal ring; an isthmus extends across the second to fourth tracheal rings and unites the lobes |
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THYROID GLAND
PYRAMIDAL LOBE |
A. Thyroid gland
2. Pyramidal lobe: conical process extending superiorly from the isthmus; present in about 40 percent of individuals |
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THYROID GLAND
SUPERIOR & INFERIOR THYROID ARTERIES |
a. Superior and inferior thyroid arteries: arise from the external carotid
artery and thyrocervical trunk, respectively (see pp. 217 and 219, respectively) |
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THYROID GLAND
THYROIDEA IMA |
A. Thyroid gland
b Thyroidea ima artery (inconstant): unpaired artery; usually arises from the brachiocephalic trunk and ascends to the thyroid gland on the anterior surface ofthe trachea |
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THYROID GLAND
SUPERIOR THYROID VEIN |
A. Thyroid gland
c. Superior thyroid vein: courses with its corresponding artery; drains into the internal jugular vein |
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THYROID GLAND
MIDDLE THYROID VEIN |
d. Middle thyroid vein: has no corresponding artery; drains into the in-
ternal jugular vein |
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THYROID GLAND
INFERIOR THYROID VEIN |
e. Inferior thyroid vein: drains inferiorly into its respective brachio-
cephalic vein; the two inferior thyroid veins may unite into a single vein which drains into the left brachiocephalic vein |
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THYROID GLAND
LYMPHATICS |
f. Lymphatics: drain to deep cervical nodes
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THYROID GLAND
CLINICAL NOTE |
4 Clinical note: tracheostomy surgery is usually performed inferior to the
thyroid isthmus; sources of hemorrhage may include the isthmus ot tlie thyroid, inferior thyroid veins, jugular venous arch, or the thyroidea ima artery, if present |
