File:Heart outflow tract stage 14 03.jpg

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Heart Outflow Tract (Carnegie Stage 14) EFIC

EFIC images are from an episcopic data set prepared from a human embryo at Carnegie stage 14, representing the end of the fifth week of development.

B cut in frontal fashion at the junction of the outflow tract with the pharyngeal mesenchyme, shows the origins of the pharyngeal arch arteries from the aortic sac. The back wall of the sac, shown by the star, is the putative aortopulmonary septum. The two single-headed arrows show the extent of the pericardial cavity.

Sixth Arch Artery

right arch - proximal part persists as right pulmonary artery, distal part degenerates
left arch - left pulmonary artery and ductus arteriosus
See Pharyngeal arches

Pharyngeal Arch Derivatives
Pharyngeal Arch	Nerve	Artery	Neural Crest (Skeletal Structures)	Muscles	Ligaments
1 (maxillary/mandibular)	trigeminal (V)	maxillary artery (terminal branches)	mandible, maxilla, malleus, incus	muscles of mastication, mylohyoid, tensor tympanic, ant. belly digastric	ant lig of malleus, sphenomandibular ligament
2 (hyoid)	facial (VII)	stapedial (embryonic) corticotympanic (adult)	stapes, styloid process, lesser cornu of hyoid, upper part of body of hyoid bone	muscles of facial expression, stapedius, stylohyoid, post. belly digastric	stylohyoid ligament
3	glossopharyngeal (IX)	common carotid, internal carotid arteries	greater cornu of hyoid, lower part of body of hyoid bone	stylopharyngeus
4	vagus (X) superior laryngeal branch	part of aortic arch (left), part right subclavian artery (right)	thyroid, cricoid, arytenoid, corniculate and cuneform cartilages	crycothyroid, soft palate levator veli palatini (not tensor veli palatini)
6	vagus (X) recurrent laryngeal branch	part of left pulmonary artery (left), part of right pulmonary artery (right)	thyroid, cricoid, arytenoid, corniculate and cuneform cartilages	larynx intrinsic muscles (not cricothyroid muscle)

Historic Embryology - Cardiovascular
1902 Vena cava inferior \| 1905 Brain Blood Vessels \| 1909 Cervical Veins \| 1909 Dorsal aorta and umbilical veins \| 1912 Heart \| 1912 Human Heart \| 1914 Earliest Blood-Vessels \| 1915 Congenital Cardiac Disease \| 1915 Dura Venous Sinuses \| 1916 Blood cell origin \| 1916 Pars Membranacea Septi \| 1919 Lower Limb Arteries \| 1921 Human Brain Vascular \| 1921 Spleen \| 1922 Aortic-Arch System \| 1922 Pig Forelimb Arteries \| 1922 Chicken Pulmonary \| 1923 Head Subcutaneous Plexus \| 1923 Ductus Venosus \| 1925 Venous Development \| 1927 Stage 11 Heart \| 1928 Heart Blood Flow \| 1935 Aorta \| 1935 Venous valves \| 1938 Pars Membranacea Septi \| 1938 Foramen Ovale \| 1939 Atrio-Ventricular Valves \| 1940 Vena cava inferior \| 1940 Early Hematopoiesis \| 1941 Blood Formation \| 1942 Truncus and Conus Partitioning \| Ziegler Heart Models \| 1951 Heart Movie \| 1954 Week 9 Heart \| 1957 Cranial venous system \| 1959 Brain Arterial Anastomoses \| Historic Embryology Papers \| 2012 ECHO Meeting \| 2016 Cardiac Review \| Historic Disclaimer