How is the depolarizationof the neuronal plasmamembrane generated? Howdoes the cell return to itsoriginal rest?

Q: What are the cells thatproduce the myelin sheath? Ofwhich substance is the myelinsheath formed?

A: Myelin is a fatty membrane which wraps around the nerve exon in a spiral fashion to serve to…

Q: Explain the mechanism of nematocyst discharge. How can a hydrostatic pressure of one atmosphere be…

A: The Cnidarians are a phylum of simple animals. It includes jellyfish, hydras, corals, and sea…

Q: What are the three typesof protein fibers of theconnective tissue proper?

A: The tissue is a cellular organizational level between cells and a complete organ. A tissue is an…

Q: Define senescence.

A: Aging is defined as the degenerative changes that occur in all organisms without any reference to…

Q: What are postmitotic cells?

A: Mitosis is a stage in the cell cycle, where a cell divide into two identical daughter cells. The…

Q: After passing theepididymides through whichstructures do sperm cells gountil exteriorization?

A: The male reproductive system consists of testis, ducts, associated glands and the sexual organ or…

Q: What are the effects of increased PCO2 and decreased PO2?

A: The partial pressure of carbon dioxide is between 35 and 45 millimeters of mercury. Partial pressure…

Q: What type of tissue is the most affected by the Marfan’s syndrome, and why?

A: In a cellular organizational level, the tissue is the organizational level of between cells and…

Q: What is the function of thecollagen fibers of theconnective tissue?

A: Connective tissues are one among the four types of tissues present in animals. It is formed from…

Q: What are the regulatory mechanismsthat control the rearrangement ofcell–cell junctions in epithelia…

A: The cells are attached together by a specific adhesive glycoprotein. The epithelial cells are…

Q: Whatv are neurons?

A: The network of nervous system consists of brain, spinal cord and nerves. The nervous system plays an…

Q: Whats is contiguous conduction?

A: The nervous system functional unit is nerve or neuron. Neurons classified into three types based on…

Q: What does it mean that epithelial cells are polarized?

A: The cells are the primary unit of life. It forms the basic structure of the organism and is involved…

Q: What happens to the circadian clockduring hibernation?

A: Introduction  The mechanism of Hibernation for the European hamster starts onwards when the body…

Q: Describe the physiological conditions that activategluconeogenesis.

A: Gluconeogenesis is the metabolic process by which organisms produce sugars for catabolic reactions…

Q: Distinguish between exocrine and endocrine glands.How are multicellular exocrine glands classified…

A: Endocrine gland                       Exocrine gland  They are…

Q: Define Vacuole.

A: In eukaryotic cells the nucleus is enveloped and contains a structure called nucleolus in the centre…

Q: How would finger formation be affected if apoptosis did not occur?

A: Apoptosis is generally known as programmed cell death.  Every normal cell has got some specific life…

Q: Why are neural or hormonal inputs needed for slow waves to be conducted?

A: Slow waves are generated in interstitial cells of Cajal in smooth muscles. These waves spread to the…

Q: what is phase shift and circadian rythm

A: A circadian rhythm is a roughly 24 hour cycle in the physiological processes of living beings,…

Q: What is an example ofnegative feeback of thehomeostatic regulation?

A: A feedback mechanism is a common mechanism of hormonal or nervous control and regulation. There are…

Q: How does thedepolarization of the neuronalmembrane start?

A: The alteration of action potential can result in two conditions; repolarization and depolarization.…

Q: how can nervous system regulate the internal environment of PNS?

A: The neural system of all animals is composed of highly specialised cells called neurons. The neurons…

Q: Describe Circadian rhythm?

A: Biological rhythms are the natural process of change in the substances or processes of human bodies.…

Q: What is the structurethrough which the neuralimpulse is transmitted fromone cell to another? What…

A: Neural impulse is the electrical signal which results in the movement of ions in and out across the…

Q: What are the components of astrocytes?

A: Neuroglia, also known as glial cells refers to non-neuronal cells present in central and peripheral…

Q: When does the membrane gets depolarized?

A: The presence of opposing electrical charges on either side of a cell membrane is referred to as…

Q: What is the excitationthreshold of a neuron? Howdoes this threshold relate tothe “all-or-nothing”…

A: Neurons, also known as nerve cells are the fundamental unit of brain and nervous system. They are…

Q: why does the action potential proceed in both directions away from the point of local current entry…

A: The nervous system functions to sense, integrate, and respond to the external or internal stimulus…

Q: Which hormones are involved in dormancy?

A: Phytohormone or plant growth substance regulate plant growth and development. Hence they also called…

Q: How Is Nighttime ACTH Secretion Related to ExpectedSleep Duration?

A: Adrenocorticotropic hormone (ACTH) is secreted by anterior lobe of pituitary gland. This hormone is…

Q: What are the three mainparts into which a neuron canbe divided? What are theirrespective functions?

A: Neurons are the basic structural and functional unit of the nervous system. They are capable of…

Q: Which is the normal signof the electric charge betweenthe two sides of the neuronplasma membrane?…

A: The neurons are the specialized cells of the nervous system that help in transporting signals from a…

Q: Explain the mechanisms by which Shh induces ventral differentiation of the neural tube

A: Neural tube abnormalities lead babies to be born with brain, spine, or spinal cord problems.…

Q: How do antagonisticmechanisms managehomeostatic regulation?

A: Homeostasis is the tendency of living beings to maintain constant internal bodily conditions. Any…

Q: What are fibers that release ACh at their synapses called? What about those that release NE?

A: Neurotransmitters are chemical substances that transmit information from nerve cell to target cell.…

Q: What are various types of astrocytes?

A: Astrocyte, are star shaped cell that's a kind of neuroglia found within the system in each…

Q: Expand the term PMDD?

A: Biology terms are fundamental concepts and terms used in biology, which is the study of life and…

Q: Which are the targetorgans and target tissues ofthe neurohypophysis?

A: Neurohypophysis, also called pars nervosa, is the posterior pituitary gland.

Q: What is interstitial fluid?

A: Introduction: In an adult human, water makes up about 60% of the total body weight. The fluid is…

Q: What are the distinguishing microscopic features of the different types of neurons?

A: Neurones are the structural and functional unit of the nervous system. Neuron has three essential…

Q: Enlargment of which gland takes place due to deficiency of iodine?

A: Iodine is an essential trace element in biological systems. Iodine is critical to proper functioning…

Q: How do intracellular signalingcircuits generate specific and dynamicsignaling patterns such as…

A: Cell signaling may be a style of the communication process that governs cells' basic metabolic…

Q: In chemical terms how isthe neuronal repolarizationachieved?

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: Is this still a cheek cell? If not, what is it called?

A: Introduction :- Mucin, the main component of mucous, is secreted continuously by cheek cells. The…

Q: Mention one significant function of central vacuole.

A: About 90% of total volume of a plant cell is occupied by a single membrane - bound central vacuole.…