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
Ion channels are integral membrane proteins having pores through which ions pass between extracellular spaces and the interior of cells. There... View Article
Neurons can be classified based on the length of axons - Golgi type I neurons - these are long axons. They are required to cross the brain.... View Article
Based on the number of neurites, neurons can be classified into: Anaxonic: do not exhibit any axon Unipolar Neurons: have one axon with two... View Article
Neuroglia is supporting cells of the nervous system. There are different types of neuroglia, such as - Type of Neuroglia Structure Function... View Article
When the skin surface drops to a temperature under 95 º F, cold receptors begin perceiving cold sensations. It is mostly triggered when the... View Article
The transpirational pull is a result of evaporation from the surface of the mesophyll layer in leaves to its surroundings through openings on... View Article
If a plant lacks water, stomata close as there is no sufficient water for it to establish pressure in guard cells for stomata to open. This... View Article
Leaves take part in the exchange of gases. Carbon dioxide enters leaves and water vapour and oxygen exits plants through stomata. There are some... View Article
