Development Of Fetal Structures From the Three Germ Layers:
The three germ consiting of Ectoderm, mesoderm and endoderm give rise to all the organs and structures in the body. The list of structures developed from 3 primitive germ layers in given below.

Skin Ectoderm-

Epidermis, hair, nails,
Cochlear duct, semicircular ducts,
Enamel of tooth,
Adenohypophysis,
Lens of eye,
Parotid gland,
Mammary gland,
Epithelial lining of lower anal …

Regional Anatomy of PICA:
The posterior inferior cerebellar artery also known as PICA is the largest branch of the vertebral artery, passes on an irregular course between Medulla and Cerebellum.  It is one of the 3 major arteries supplying  the cerebellum. It supplies the posterior part of inferior surface of Vermis, Central nucleii of Cerebellum and undersurface of Cerebellar hemisphere.It also …

Introduction:

Nervous system is one of the earliest systems to begin development and the last to be completed after birth.
The entire nervous system develops from the ectoderm.
Ectoderm forms the neural plate during 3rd week of development.
Neural Groove forms in the midline of the neural plate ,either side of which are the neural folds. Groove continues to deepen until about week 4. …

Dangerous area of face

Also known as

Dangerous area of face
Danger area of face
Triangle of death of face

Definition and description
It approximately covers the area from the corners of the mouth to the bridge of the nose, including the nose and maxilla. The facial vein is the largest vein of the face with no valves. Deep connections of the facial veins include:

A …