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Human Fetal Period

9th week development

The period from the beginning of the ninth week to birth is known as fetal period. During this period, differentiation …

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Birth Defects


Any structural, behavioral or metabolic disorders present at birth are known as birth defects. Other related terms include: a. Teratology/Dysmorphology …

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Derivatives of Endoderm (Embryonic Period)


The endoderm germ layer covers the ventral surface of the embryo forming the roof of the yolk sac. The GIT …

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Internal Carotid Artery

internal carotid and vertebral artery

The internal carotid artery is one of the two terminal branches of the common carotid artery (the other being the …

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External Carotid Artery

external carotid artery

One of the two terminal branches of the common carotid artery, the external carotid artery (the other being the internal …

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Common Carotid Artery

The common carotid artery has separate origins on the left and the right side, arising from the brachiocephalic artery behind …

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Axillary Artery

Axillay artery, a continuation of the subclavian artery, begins at the lateral border of the first rib. At the lower …

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Subclavian Artery

The right and left subclavian arteries have separate origins. The right subclavian artery is one of the two terminal branches …

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Internal Iliac Artery

The internal iliac artery arises from the common iliac artery at the level of the sacroiliac joint. It passes down …

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Common Iliac Arteries

The terminal branches of the aorta are the right and the left common iliac arteries. They arise from the descending …

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