What is a synaptic knob?a. receptor for neurotransmitter in the neuromuscularjunctionb. membrane sac holding the neurotransmitterc. expanded tip of an axon at the neuromuscular junctiond. the space that separates the neuron from the muscle fiber

Q: γ-motor neuron discharge to a muscle is inhibited by impulses reaching the γ-motor neurons from all…

A: A gamma motor neuron cell bodies are located in the anterior grey column of the spinal cord. A gamma…

Q: What could happen if you block the binding of acetylcholine to its receptors at the neuromuscular…

A: A neuromuscular junction is a biochemical synapse between muscle fiber and a motor neuron. It…

Q: How would you explain the following observation? When motor nerve fibers in the leg are severed, the…

A: Motor nerve fibres are responsible for carrying the impulses from the central nervous system to the…

Q: What determines the effect of neurotransmitter release on the post-synaptic neurons? * 1 point…

A: Neurotransmitters are defined as the type of chemical messengers that are released by the neurons…

Q: Suppose that gated ion channels for Na+or Ca2+ opened in the plasma membrane of a muscle cell.The…

A: The correct option is (d) All of these.

Q: Several snake venoms contain toxins which blocks acetylcholine receptors at the neuromuscular…

A: The neuromuscular system includes all the muscles in the body and the nerves that are required to…

Q: An action potential travels down the 13. Ахon of the motor neuron until it reaches the presynaptic…

A: An action potential can be defined as a rapid increase and decrease in the membrane potential of the…

Q: γ-motor neurons control muscle tone by :-a- adjusting the supraspinal facilitatory dischargeb-…

A: Muscle tone refers to the maintenance of partial contraction which important for maintaining posture…

Q: To demonstrate muscle fatigue, a student held an 8 lb dumbbell in her hand and abducted her arm…

A: Ans - the correct answer for the above question is- A) Different motor units were contracting while…

Q: Explain how it makes sense physiologically that the last fibers to be recruited to contract are the…

A: Fatigue is a term used to describe an overall feeling of tiredness or lack of energy. It isn’t the…

Q: ACh receptors are found in:- a. synaptic vesicles. b. terminal cisternae. c. thick filaments. d.…

A: Acetylcholine is a neurotransmitter in the body that is principally responsible for the relaxation…

Q: If a somatic motor neuron fires an action potential, then ________.     acetylcholinesterase is the…

A: Somatic motor neurons originate in the central nervous system. The somatic motor division sends…

Q: Given what you have learned from the first experiment, you prepare the other leg for a fresh…

A: Curare," which is a class of drugs that block nicotinic acetylcholine receptors (nAChRs) located on…

Q: Increased γ-motor neuron discharge stimulates muscle spindles, because :-a- it produces stretch of…

A: A gamma motor neuron (γ motor neuron) is a type of lower motor neuron, which takes part in the…

Q: escribe the sequence of events that occurs from the time the patellar tendon is stretched to the…

A: Muscle is the system that controls the movement of organisms. This is also responsible for…

Q: What is the function of acetylcholinesterase? O a. to prevent undesired continuous contractions O b.…

A: Acetylcholinesterase is an enzyme that is available at the postsynaptic membrane of the…

Q: TRUE OR FALSE   Depolarization of the rod cell membrane causes increased neurotransmitter release.

A: Rod cells release more of their neurotransmitter when they are depolarized. This happens because…

Q: Discharge from muscle spindles could be increased by all the following, except :-a- increased…

A: Muscle tissue is soft tissues that provide ability to contract. Cardiac muscle, skeletal muscle, and…

Q: Explain why the ratio of motor neurons to skeletal muscle fibers is greater in muscles that control…

A: A motor neuron is a neuron whose cell body is situated in the motor cortex, brainstem or the spinal…

Q: The drug Botox prevents wrinkles by preventing muscles from contracting. Specifically, it prevents…

A: Botulinum toxin is a neurotoxic protein produced by the bacterium Clostridium botulinum.

Q: Golgi tendon organs are located in ________ and cause muscle to __________ in the tendon reflex.…

A: The GTO or Golgi tendon organ is referred to as a sensory receptor organ that tends to sense any…

Q: Use choices from the following word bank to fill in the blanks 13 - 22: Calcium ions Myosin Action…

A: A muscle is a smooth tissue in animals. On the basis of structure, contractile properties, and…

Q: Which statement is false? O The muscle spindle forms a monosynaptic connection with the alpha motor…

A: A muscle spindle consists of various different  muscle fibers (intrafusal fibers) that are…

Q: What do we mean by the somatic motor system? O a. Cardiac muscle O b. The smooth muscles and glands…

A: Introduction :  The group of central and peripheral nervous system elements that support motor…

Q: If acetylcholinesterase fails to function properly at the neuromuscular junction, which of the…

A: The neurons are specialised cells of the human nervous system. The neurons of the nervous system…

Q: Explain why the ratio of motor neurons to muscle fibers isgreater in muscles that control eye…

A: The muscle system is responsible for several functions such as maintaining body posture, locomotion,…

Q: Which is not an action of a muscle? activate push pull O a. O b. O c. O d. contract

A: Muscle action means the muscle movement. This includes both contracting and relaxing.The  muscle…

Q: When the γ-motor neuron discharge to a muscle decreases, it causes :-a- increased muscle spindle…

A: The nervous system plays a major role in transmitting the reflexes from the tissues to the brain.…

Q: BONUS: Which statement describes the correct order for neurotransmitter release from the pre…

A: Neurons deliver electrical impulses through neurotransmitters. The body's chemicals are electrically…

Q: Which type of proprioreceptor is sensitive to changes in both muscle length and the speed of muscle…

A: Introduction  Isometric: A muscular contraction in which the muscle length remains constant.…

Q: Increased sensory discharge from muscle spindles :-a- decreases muscle toneb- increases muscle…

A: The spinal cord reflexes produced by central nervous system (CNS) pathways, which lie entirely…

Q: What comes before the release of neurotransmitters at the synaptic cleft? 1. Neurotransmitters…

A: Synaptic transmission is a process whereby electrical impulse pass through a synapse with the…

Q: The Interstitial Cells of Cajal (ICC) generate "slow waves" which refer to O A. slow action…

A: Option:B   phasic contractions

Q: How is the muscular contraction stopped (i.e.: how does a muscle relax after contraction)? 1. The…

A: Muscle Contraction is triggered when an action potential travels along the nerves to the muscles.…

Q: What system will reset the membrane potential after an action potential has moved along the…

A: voltage-gated Ca2+ channels will reset the membrane potential after an action potential has moved…

Q: The central ends of afferents from muscle spindles synapse with all the following types of neurons,…

A: The “muscle spindle” is the important stretch receptor present in the muscle which involved in…

Q: What ion is needed to release neurotransmitters from thesynaptic vesicle? What neurotransmitter is…

A: Introduction:   Synaptic vesicles are small membrane sacs that transport neurotransmitters from the…

Q: Which statement CORRECTLY describes a motor unit? O a. A single muscle fibre plus all the motor…

A: The muscle fibers are functionally organized as the motor units. All the varied reflexes and the…

Q: Which components of the nervous system are involved with skeletal muscle movement. Be specific about…

A: In science, the nervous system is a profoundly complex piece of a creature that organizes its…

Q: Interruption of spindle discharge from a muscle causes contraction of the muscle to become jerky and…

A: Muscle spindle is small, spindle-shaped sensory receptors located in skeletal muscle tissue and they…

Q: Muscle Skeletal muscle spindle 1 The drawing you see is of a neural circuit. Please answer the…

A: Since we only answer up to 3 sub- parts, we will answer the first 3. Please resubmit the question…

Q: When an action potential arrives at the neuromuscular junction, acetylcholine is released into the…

A: Muscle is the tissue present in the body that helps for movement and change shape. There are mainly…

Q: If we blocked all voltage-gated sodium channels in a lower motor neuron and then injected calcium…

A: Voltage gated Na+ channel inactivation in extremely important for an action potential. The Na+…