Amphibians are a convenient system for studying vertebrate development for the following reasons - They undergo external development They... View Article
When the lower end of the neural tubes does not close, spina bifida occurs. As a result, backbones and the spinal cord do not properly develop. A... View Article
If the cytoplasm of a fertilized egg in some way is compartmentalized, then the process of cleavage gives rise to differential 'parcelling-out'... View Article
Through neurulation, neural plates form the neural tube. Towards the termination of the third week, the lateral edges of neural plates increase... View Article
Anencephaly is a fatal state wherein the upper end of the neural tube does not close. In such cases, the brain either is totally absent or never... View Article
Neurulation takes place in different ways in various regions of the body. The tail, trunk and head form the region of the neural tube in ways... View Article
Neurulation is the process by which neural plates become neural tubes. This process takes place at an early stage in embryonic development. In... View Article
Meninges refers to membranous coverings of the spinal cord and the brain. Meninges constitute these layers - dura mater, pia mater, arachnoid... View Article
Neurulation is the process by which neural plates become neural tubes. This process takes place at an early stage in embryonic development (in... View Article
Myelin sheath insulates axons against depolarization forcing action potential to take place in nodes of Ranvier between myelin sheaths. Myelin... View Article
Positive Na+ ions flow through the membrane into cells for two reasons in this case - Resting potential keeps the inside of cells negatively... View Article
Brain connectivity corresponds to a pattern of anatomical inks of statistical dependencies or interactions in a nervous system between different... View Article
Circle of Willis are vascular structures surrounding the brain stem throwing off main vessels which supply the cerebral hemispheres. As the... View Article
Meninges have the following tissue membranes - Dura mater - composed of thick fibrous tissue Pia mater - thin membrane directly adherent to... View Article
Microglia are the special immune cells present in the brain only. They are responsible for destroying pathogens. They engulf cellular debris and... View Article
Glial cells are involved in - Renders physical strength to neurons Nutrition supply and required oxygen for neurons Protection for neurons... View Article
Cortex is grouped into different cortical areas which promote comprehension of the working of the brain. The remaining division of cortex in... View Article
The four main components of the Diencephalon are - Epithalamus - it includes the pineal gland. It is responsible for circadian rhythm and... View Article
