Organ system development
Development of the cardiovascular system
Development of the ear
Development of the eye
Development of the face and palate
Pharyngeal arches, pouches, and clefts
Development of the digestive system and body cavities
Development of the gastrointestinal system
Development of the teeth
Development of the tongue
Development of the integumentary system
Development of the axial skeleton
Development of the limbs
Development of the muscular system
Development of the nervous system
Development of the renal system
Development of the reproductive system
Development of the respiratory system
0 / 38 complete
0 / 4 complete
The nervous system starts to form as early as the third week of embryonic development. By the fourth week, the neural tube has formed and is starting to close. This tube will become the spinal cord and brain. The primitive brain is divided into three major sections: the prosencephalon or the forebrain, mesencephalon or the midbrain, and rhombencephalon or the hindbrain.
The prosencephalon gives rise to the telencephalon, which later becomes the cerebral cortex and basal ganglia. The diencephalon gives rise to the optic cup, which becomes the eyes, the thalamus, the hypothalamus, and the mammillary bodies. The mesencephalon gives rise to the tectum, the cerebral aqueduct, the red nucleus, the crus cerebrum, and the substantia nigra. Finally, the rhombencephalon develops into the metencephalon, which later gives the pons and cerebellum, and the myelencephalon, which later becomes the medulla oblongata.
Latest on COVID-19
Nurse Practitioner (NP)
Physician Assistant (PA)
Create custom content
Raise the Line Podcast
Copyright © 2024 Elsevier, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Cookies are used by this site.
Terms and Conditions
USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.