Description : Myelin sheaths are found: a) surrounding tendons b) covering the brain c) covering muscles d) around axons of neurons
Last Answer : ANSWER: D -- AROUND AXONS OF NEURONS
Description : In most axons, the myelin sheath is interrupted at intervals of about 1 millimeter or more. These interruptions are called the: a) glial b) nodes of Ranvier (pron: ron-vee-ay) c) collaterals d) nodes of Babinet
Last Answer : ANSWER: B -- Nodes of Ranvier
Description : (4) Fundamental unit of nervous system Explanation: A neuron is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon.
Last Answer : Water cycle refers to - (1) an integrated attempt to recycle water in relatively arid regions (2) constant movement of water from ocean to land and back to ocean once again (3) ... management of water in areas excessively plagued with water-logging (4) water distribution in relatively dry area
Description : What is the difference between Dendrites and Axons? -Biology
Last Answer : answer:
Description : Which one of the following pairs of structures distinguishes a nerve cell from other types of cell? (a) Vacuoles and fibres (b) Flagellum and medullary sheath (c) Nucleus and mitochondria (d) Perikaryon and dendrites
Last Answer : d) Perikaryon and dendrites
Description : Which of the following types of cells have a latent ability to regenerate? a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the ... a type of labile cell that multiply constantly to replace cells worn out by normal physiologic processes.
Last Answer : a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the kidney, liver, and pancreas, among other body organs.
Description : In artificial Neural Network interconnected processing elements are called A. nodes or neurons B. weights C. axons D. Soma
Last Answer : A. nodes or neurons
Description : The white matter present in the brain and spinal cord consists of (a) neuroglia (b) myline sheath (c) terminal arborizations of axons (d) cellular sheath of Schwann
Last Answer : Ans:(b)
Description : What is Myelin Sheath ?
Last Answer : : A layer of isolated fatty substance beneath the neurallama is called myelin sheath .
Description : Myelin sheath is the covering of
Last Answer : Myelin sheath is the covering of A. Muscle cell B. Axon C. Blood vessels D. Osteocyte
Description : Cells which envelop nerve fibres and form myelin sheath around the axon are
Last Answer : Cells which envelop nerve fibres and form myelin sheath around the axon are
Description : Phospholipids occur in (A) Myelin sheath (B) Stabilizes chylomicrans (C) Erythrocyte membrane (D) All of these
Last Answer : Answer : D
Description : Consider the following statements: 1. Propagation of a nerve impulse in a myelinated nerve fibre is different from that of unmyelinated fibre. 2. The impulse actually travels by leaping through the nodes of Ranvier in an unmyelinated fibre 3. ... incorrect? (a) 1, 2 (b) 1, 3, 4 (c) 2 only (d) 2, 3
Last Answer : Ans:(d)
Description : What is Myelin sheath?
Last Answer : They fatty sheath covering on the axon is called Myelin sheath.
Description : Which of the following statement is correct for node of Ranvier of nerve? (a) Neurilemma is discontinuous. (b) Myelin sheath is discontinuous. (c) Both neurilemma and myelin sheath are discontinuous. (d) Covered by myelin sheath.
Last Answer : (b) Myelin sheath is discontinuous.
Description : Myelin sheath is produced by (a) astrocytes and Schwann cells (b) oligodendrocytes and osteoclasts (c) osteoclasts and astrocytes (d) Schwann cells and oligodendrocytes.
Last Answer : (d) Schwann cells and oligodendrocytes.
Description : Myelin sheath is produced by : (1) Astrocytes and Schwann cells (2) Oligodendrocytes and Osteoclasts (3) Osteoclasts and Astrocytes (4) Schwann cells and Oligodendrocytes
Last Answer : (4) Schwann cells and Oligodendrocytes
Description : The tubular and dorsal nervous system of chordates is related to the cephalization in these animals and to bilateral symmetry. The presence of neural integrating centers with concentration of ... These features have been preserved by evolution as they provide adaptive advantage to their owners.
Last Answer : How can the tubular-dorsal nervous system in chordates be compared to the nervous pattern present in invertebrates?
Description : The following are true about the autonomic nervous system: a. the preganglionic fibres are mainly myelinated, slow conducting B fibres b. the postganglionic fibres are mainly unmyelinated C fibres c. all preganglionic neurones are cholinergic neurons d. all above
Last Answer : all above
Description : Which one of the following statements is correct? (a) Endocrine glands regulate neural activity, but not vice versa. (b) Neurons regulate endocrine activity, but not vice versa. (c ... endocrine glands. (d) Neither hormones control neural activity nor the neurons control endocrine activity.
Last Answer : (c) Endocrine glands regulate neural activity and
Description : Which endocrine organ acts like the postganglionic neurons of the sympathetic nervous system? A) thyroid gland B) thymus gland C) adrenal cortex D) adrenal medulla E) islets of Langerhans of the pancreas
Last Answer : D) adrenal medulla
Description : The transverse section of a plant shows following anatomical features : (i) Large number of scattered vascular bundles surrounded by bundle sheath (ii) Large conspicuous parenchymatous ground ... (a) Monocotyledonous stem (b) Monocotyledonous root (c) Dicotyledonous stem (d) Dicotyledonous root
Last Answer : (a) Monocotyledonous stem
Last Answer : The branches formed from dendrons are called dendrites.
Description : What does this mean Stimulation of the receptor cells causes the stimulates the dendrites of the sensory nerves wrapped around the receptor cells and impulses from the taste bud are transmitted to the brain?
Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want
Description : Which part/organ of the human body do the following belong: (i) Eustachian tube (ii) Cartilage (iii) Auricle (iv) Tendon (v) Dendrites
Last Answer : Answers: (i) Eustachian tube...... Ear (ii) Cartilage............ ... Connective tissue (iii) Auricle............... .. Ear (iv) Tendon ................Muscle (v) Dendrites... ........... Neuron
Description : The narrow space which separates the axonites of a neuron and the dendrites of an- other neuron is called?
Last Answer : Synapse
Description : What are dendrites?
Last Answer : The short projections arising from the cell body is called dendrites.
Description : Define Dendrites.
Last Answer : A fine projection of the cell body that receives messages is called dendrites.
Description : Write down the role of dendrites?
Last Answer : Dendrites are organelles that sense the neurotransmitter secreted by the axon of another neuron. Most neurons have more than one dendrite. Dendrites and axons do not directly touch each other; there is a gap, called a synapse.
Description : What is the difference between Myelinated and Non-myelinated axons? -Biology
Last Answer : 1 neuron has 1 action.
Description : What Axons from ganglion cells make up?
Last Answer : Feel Free to Answer
Description : What are the fatty covering of some axons called?
Last Answer : Myelin sheath
Description : The axons of the Purkinje cells in the cerebellar cortex: a. terminate in excitatory synapses b. terminate in cerebellar nuclei c. terminate in the spinal cord. d. form the main efferent pathway from the cerebellar cortex
Last Answer : terminate in cerebellar nuclei
Description : In the neurones: a. the axons convey impulse away from the cell body b. neurotransmitters are synthesized in the cell bodies and then transported to the axons c. the condition ... with fibre diameter d. the excitability is increased if the extracellular calcium concentration is decreased
Last Answer : the axons convey impulse away from the cell body
Description : Microfilaments may assist a. in the movement of fibroblasts in heart b. growth of axons c. contraction of all muscle d. all
Last Answer : all
Description : Receptor sites for neurotransmitters are present on (a) pre-synaptic membrane (b) tips of axons (c) post-synaptic membrane (d) membranes of synaptic vesicles.
Last Answer : (c) post-synaptic membrane
Description : Write down the role of axons?
Last Answer : Axons are organelles that carry information away from the cell body. Axons may be as small as several microns or as long as several meters in giraffes and whales. The axons main job is to send a ... only one axon, but the axon may have branches with what are called terminal buttons at its end.
Description : Receptor sites for neurotransmitters are present on : (1) Pre-synaptic membrane (2) Tips of axons (3) Post-synaptic membrane (4) Membrane of synaptic vesicles
Last Answer : (3) Post-synaptic membrane
Description : What is Myelin ?
Last Answer : In most cases there is a layer of fluid between the neurilema and the axon. This layer is called myelin coating .
Description : What does the Schwann cell forms a myelin around?
Description : Do myelin sheaths slow down or speed up nerve impulses?
Last Answer : What is the answer ?
Description : Myelin?
Last Answer : DefinitionMyelin is an insulating layer that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. The purpose of the myelin sheath is ... If the myelin is damaged, the impulses slow down. This can cause diseases like multiple sclerosis.
Description : In biological studies which of the following is used to refer to the oxygen-binding, iron-containing, conjugated protein complex present in the sarcoplasm of muscle cells? a) myelin b) myosin c) myoglobin d) none of these
Last Answer : ANSWER: C -- MYOGLOBIN
Description : What is nervous tissue? -Biology
Description : The hormonal alterations that follow operation and injury favor accelerated gluconeogenesis. This new glucose is consumed by which of the following tissues? A. Central nervous system. B. Skeletal muscle. C. Bone. D. Kidney. E. Tissue in the healing wound.
Last Answer : Answer: ADE DISCUSSION: Glucose is produced in increased amounts to satisfy the fuel requirements of the healing wound. In addition, nerve tissue and the renal medulla also utilize this substrate. Skeletal muscle primarily utilizes fatty acids, and bone utilizes mineral substrate
Description : The part of the body directly affected by Pneumonia is _____ A. Respiratory system B. Bone tissue C. Nervous system D. Epidermal tissue
Last Answer : ANSWER: D
Description : Of which cells is the nervous tissue constituted? How is the generic function of this tissue related to the characteristics of the main cell type that forms it?
Last Answer : The nervous tissue is formed of neurons and glial cells. The function of the nervous tissue is to receive and to transmit neural impulses (reception and transmission of information). This function ... their work (sometimes acting as insulators). Cell Tissue - Image Diversity: neuron glial cell
Description : How is the nervous tissue distributed in cnidarians?
Last Answer : Their nervous system is diffuse, there are no brain or ganglia.