-> Cardiogenic plates
What happens during head and lateral folding?
Cardiac Tubes fuse and move ventral to foregut
Mesoderm Caudal to cardia tube:
What attaches to the heart to the pericardial cavity?
What connects both sides of the pericardial cavity?
Transverse Pericardial Sinus
Expansions within the Cardiac Tube ->
What forms within the cranial and caudal cardiac tube (4th and 5th chambers)?
: Truncus Arteriosus
: Sinus Horn
Cardiac Tube ->
What happens before and after the cardiac tube to form a U-Shape?
The Cardiac Tube spirals
Bulbus and Ventricle = U-shape
-> bulboventricular loop
Two endocardial cushions form at the ____, and are called:
...form at the
common Atrioventricular Canal
and are called:
Dorsal and Vental Atrioventricular Cushions
Fusion of Atrioventricular Cushions
The Septum Intermedium creates...
L & R atrioventricular Orifaces
Steps in Septation of Atrium
Diminishing gap btw. the Septum Primum & Suptum Intermedium
Foramen Secundum originates as
Perforations in the Septum Primum
Foramen Ovale forms in the
Foramen allows blood to flow through the
(Fermen Secundom ->)
(2) -> Right Atrium
Right horn of sinus venosus ->
Embryonic R Atrium is characterized by...
pectinate muscles in the Right Auricle
What connects to lung buds
a single venous vessel grows from the L Atrium
What forms the smooth walled part of the L Atrium
incorperation of pulmonary vessels and it's branches into the L Atrium
The Spiral Septum divides the ___ & ___ to form ___ & ___
The Conus Arteriosus is located...
Around the origin of he Pulmonary Artery in the Right Ventricle
-> Conus Arteriosus
Distal Part of the bulbus
Septation of future ventricles (2):
Muscular Interventricular Septum
Early Embryonic Circulation consists of:
Each Aortic Arch Recieves...
Aortic Arches arise from the ____
Supra Cardinal Veins ->
L and R Azygous
Azygous Veins that persist in
Secondary Centers of ossification appear in
Abnormal interstitial growth that leads to premature cessation of growth -> shortening of bones (limbs, base of skull and vertebral column)
Area of somatopleure committed to forming a limb
Localized proliferation of mesoderm, cvered by ectoderm
Chondrocranium develops from ___ ossification
Neural Crest Cells
Neurcranuim bones are derived from:
Neural Crest Cells
Occipital Somites (Chondrocranuim Only!)
Chondrocranium bones include:
Viscerocranium consists of ___ & ___
Face and Jaw