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 : Chemicals by which nerve impulses transmit through one neuron by another are
Last Answer : Chemicals by which nerve impulses transmit through one neuron by another are
Description : The nerve that carries the impulses from the sense organs to the central nervous sys- tem?
Last Answer : Sensory nerve
Description : Which nerve carries impulses from the eye to the brain?
Last Answer : The optic nerve
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 : Which of the following is a large blood vessel that carries blood away from the heart? (1) Vein (2) Artery (3) Capillary (4) Nerve
Last Answer : (2) Artery Explanation: The pulmonary artery carries blood from the right side of the heart to the lungs to pick up a fresh supply of oxygen.
Description : $ Neuron means a nerve cell. ! Neurons are found in the brain.
Last Answer : $ Neuron means a nerve cell. ! Neurons are found in the brain. A. If both As and R are correct and R ... , R is wrong D. If both As and R are wrong.
Description : What is a nerve cell or neuron?
Last Answer : Neuron is the structural and functional unit of nervous tissue.
Description : Define Neuron or Nerve Cell.
Last Answer : Neuron or nerve cell is the basic structure and functional unit of the nervous system. All parts of the nervous system are made up of neurons.
Description : Neuron is the name given to which special type of biological cell? a) a nerve cell b) a brain cell c) a skin cell
Last Answer : ANSWER: A -- A NERVE CELL
Description : If we were to get rid of the hormones within us and electrical nerve impulses of the brain, we would pretty much achieve zombie state, am I right?
Last Answer : Aren’t Zombies dead humans? We’d have to die first, no? Anyway, if we achieved zombie status, we wouldn’t know we’re in paradise so I vote no.
Description : Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus r
Last Answer : Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : ... D. If both Assertion and Reason are false.
Description : Do myelin sheaths slow down or speed up nerve impulses?
Last Answer : What is the answer ?
Description : Can a nerve fibre and nerve both carry sensory and motor impulses?
Last Answer : There are the Mixed Nerves in the spinal column that carry bothsensory and motor nerves, but these neurons have 2 different jobsthat they do,& I know of no neurons doing both as the impulsestravel to 2 different locations which couldn't be done at the sametime.
Description : What is the nerve carrying impulses from the eye to the thalamus?
Last Answer : The optic nerves carry the impulses from the eyes to the visual area of the thalamus.
Description : Local anesthetics: A. Inhibit transmission of nerve impulses by increasing sodium membrane permeability and the displacement of ionized calcium. B. Are classified as amides or esters. C. Produce peripheral vasodilation. D. Are weak acids.
Last Answer : Answer: BC DISCUSSION: Local anesthetics act within the nerve membrane, where they inhibit transmission of nerve impulses by reducing sodium membrane permeability and the displacement of ionized ... based on this bond. All local anesthetics except cocaine produce vasodilatation and are weak bases
Description : Compared with myelinated nerve fibres, non-myelinated nerve fibres : a. have a higher threshold for stimulation b. have a longer refractory period c. transmit impulses at a lower frequency d. all above
Last Answer : all above
Description : Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above
Description : Afferent nerve fibres carry impulses from (a) effector organs to CNS (b) receptors to CNS (c) CNS to receptors (d) CNS to muscles.
Last Answer : (b) receptors to CNS
Description : Define Nerve impulses
Last Answer : Neurons carry messages in the form of electro-chemical waves called nerve impulses.
Description : Which element is essentials for the transmission of impulses in the nerve fibre?
Last Answer : Calcium
Description : Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH ... produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.
Last Answer : B) When the blood becomes dilute, ADH is no longer released from the hypothalamus
Description : Presynaptic neurons conduct impulses a. toward the synapse b. away from the synapse c. both correct d. both in correct
Last Answer : toward the synapse
Description : Which one of the following correctly explains the function of a specific part of the human nephron? (a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the ... blood capillaries (d) Afferent arteriole : carries the blood away from the glomerulus towards renal vein.
Last Answer : (a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule
Description : During summer, we feel comfortable under a fan because it (a) throws cool air on us (b) sets the air in motion, thereby increasing the evaporation of sweat (c) produces convection currents (d) produces air which carries heat away from the body
Last Answer : Ans:(b)
Description : Which cell disorder in our body is responsible for colour blindness? (1) WBC (2) Cone cell (3) Red Cell (4) Neuron
Last Answer : (2) Cone cell Explanation: Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina. Cone cellsare one of three types of ... of the human eye that is responsible for colour vision and function best in relatively bright lights.
Description : The long extension of the cell body of the neuron is called
Last Answer : axon.
Description : The short projections arising from the cell body of neuron are called
Last Answer : dendrites.
Description : The fundamental structural and functional unit of nerves system is a. axon b. dendrite c. cell body d. neuron
Last Answer : neuron
Last Answer : Cone cell
Description : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is
Last Answer : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is
Description : The part of the human brain which is an important relay station for the sensory impulses and also is the origin of many of the involuntary acts of the eye such as the narrowing of the pupil in bright light is the: a) hypothalamus b) midbrain c) corpus callosum d) cerebellum
Last Answer : ANSWER: B -- Midbrain
Description : In the neurone: a. the magnitude of the action potential is dependent on the strength of the stimulus b. impulses can travel in both direction c. depolarization is accompanied by increased ... potassium ions d. during depolarization, the potential of the neurone changes from -70mV to +40mV
Last Answer : during depolarization, the potential of the neurone changes from -70mV to +40mV
Description : Which nerves convey impulses from the brain and spinal cord to the other parts of the body?
Last Answer : Motor nerves
Description : Name the parts labelled A and B in the neuron drawn above. Which part acquires the information in the neuron ? NCERT Solutions for Class 10 Science Chapter 7 Control and Coordination HOTS Q7 -Biology-10
Last Answer : A-Dendrite, B-Axon Dandrite. Dandrite to cell body or cyton to axon. Electrical impulse In the region of synapse.
Description : What part of the neuron sends out messages?
Last Answer : The synapses.
Last Answer : There are two main parts of neurons.
Description : What part of a neuron receives signals?
Last Answer : dendrites
Description : Which of the following are NOT part of a neuron? a) synapse b) axon c) Nissl bodies d) dendrite
Last Answer : ANSWER: A -- SYNAPSE
Description : What current carries cold water away from Europe?
Last Answer : Feel Free to Answer
Description : Which of the following is a large blood vessel that carries blood away from the heart?
Last Answer : Artery
Description : A ____________________ is a short length of fiber that carries the light away from the source
Last Answer : pigtail
Description : An infinitely long wire carries a current of three amps. The magnetic field outside the wire: w) points radially away from the wire x) points radially inward y) circles the wire z) is zero.
Last Answer : ANSWER: Y -- CIRCLES THE WIRE
Description : What is the difference between a neuron and a glial cell?
Last Answer : A: Neurons are the primary cells of the nervous system that transmit electrical and chemical signals, while glial cells are supportive cells that provide structural and nutritional support to neurons and help regulate their activity.
Last Answer : A: Neurons are specialized cells that transmit electrical and chemical signals in the nervous system, while glial cells provide support and insulation for neurons and also play a role in immune defense.
Last Answer : A: Neurons are specialized cells that transmit electrical and chemical signals in the nervous system, while glial cells provide support and protection for neurons, and help to maintain the proper functioning of the nervous system.
Last Answer : A: Neurons are responsible for transmitting and processing information in the nervous system, while glial cells support and protect neurons.