Muscle cells are stimulated by neurotransmitters released from the synaptic terminals of what structures? T tubules motor neuron axons. sensory neuron axons motor neuron dendrites. sensory neuron dendrites.

Q: Which of the following summarizes the role of acetylcholinesterase in muscle contraction? O opens…

A: Acetylcholinesterase (AChE) is an enzyme that breaks down the neurotransmitter acetylcholine in the…

Q: There are 3 types of muscle... skelatal, smooth and cardiac. What type of contraction are they…

A: The skeletal muscles are the voluntary (control by our own will) whereas the smooth and cardiac…

Q: What intracellular protein of smooth muscle cells binds calcium and leads to contraction?…

A: Smooth muscles or involuntary muscles are types of muscles found in visceral organs. These…

Q: Most skeletal muscles contain which of the following? O fast twitch fibers O slow twitch fibers O…

A: * Skeletal muscle functions in voluntary actions hence called as voluntary muscle. *Skeletal muscles…

Q: depolarization of the transverse tubules (T-tubules) promote

A: Every cell in the body has a cell membrane which separate it from the external environment of the…

Q: The power stroke in muscle contraction is the: Group of answer choices product of force and velocity…

A: The cells that make up muscle have the unique capacity to shorten or contract to cause movement of…

Q: Actin is sometimes called the "thick" filament. It splits ATP and is responsible for the "power…

A: The movements of different body parts are attributed to the systemic contraction and relaxation of…

Q: Looking at this diagram explain the order of size dependent recruitment of motor units during muscle…

A: Car rental refers to the performance of additional vehicles to achieve increased contraction…

Q: What special characteristics of the presynaptic neuron (motor neuron) and motor end-plate…

A: The neuromuscular junction (NMJ) is the site for chemical interaction between the motor neuron and…

Q: A nerve fiber,together with all of the muscle fibers it innervates, is called amotor unit. A motor…

A: The plasma membrane of a neuron can change its potential from a resting potential to an action…

Q: A motor unit is site of  interaction between a motor neuron and the muscle fiber that it is…

A: Neurons are the specialized cells of the nervous system and are the basic functional unit of the…

Q: What best explains the inability to fully contract a muscle when the muscle is first shortened prior…

A: Muscle contains muscle fiber cells which are specialized for contraction. The muscle movement is a…

Q: What % or fraction of muscle fibers do we use at any given moment!

A: When a person exercises systems like- The cardiovascular, respiratory, and muscular systems all work…

Q: You are working with a patient who has limitations in ankle dorsiflexion. You determine this is a…

A: In the 1940s, PNF (Proprioceptive neuromuscular facilitation) was developed by Dr. Herman Kabat for…

Q: e following are reg itch? (choose all that apply) e first phase where the "cross-bridge" c

A: The contraction of a muscle fiber in response to a stimulus by the nervous system is called as a…

Q: The endplate potential decreases with distance because

A: The end plate potential is a potential that propagates to the neighbouring patch of muscle fibre…

Q: According to the sliding filament mechanism of skeletal muscle contraction, during contraction: The…

A: The myofibrils of skeletal muscles contain alternatingly dark and light bands. The dark band is…

Q: Skeletal muscle tone :-a- is a dynamic stretch reflexb- has a dynamic state c- is increased during…

A: The muscular system of the body is the system of muscles that provides strength, shape and…

Q: If the number of active cross bridges in skeletal muscle begins to decline although the rate of…

A: Option A: Fatigue

Q: Neurons controlling skeletal muscle contraction are which type? Multipolar motor neurons Bipolar…

A: The neurons are classified into different categories on the basis of certain features. They can be…

Q: Myosin filaments iterdigitate with actin filaments in order to bring about muscle contraction.…

A: The process of muscle contraction is necessary for the normal physical activities of the body. Force…

Q: The flushed appearance of skin is due to the hemoglobin in blood. True False

A: Tissue is a part of structural organization of the body which is formed of various cell . Tissue is…

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

Q: The region where a motor nerve fiber meets a skeletal muscle fiber is called a/an _____.

A: Muscles are the connective tissue that helps in producing movement in the body. There are three…

Q: Smooth muscle cells lack transverse tubules. True or False True False

A: Muscles constitute a set of specialized tissues which play an important role in body movements along…

Q: What is the function of calcium in muscle contractions? to bind to troponin and change its…

A: Skeletal muscles are a special type of muscles made up of contractile tissue. They are a type of…

Q: In theory, could a muscle cell get away with having only acetylcholine-gated cation channels, which…

A: Voltage-gated ion channels are a crucial component of generating and propagating action potentials…

Q: complete tetanus    Has increased muscle length with no change in tension.   eccentric…

A: The contraction of the muscle generates a force called as muscle tension. There is also generation…

Q: Muscle spindles are the sensory receptors that monitor the length of skeletal muscles. When the…

A: The muscles are involved in movements happening in an organism. These movements can be voluntary or…

Q: Why is it important to remove acetylcholine from its binding to acetylcholine receptor once neural…

A: Acetylcholine : It is an organic chemical which functions in the brain and body of many types of…

Q: Put the following statments describing the skeletal muscle contraction pathway in the correct order:…

A: The signal for the muscle contraction is sent to the motor neuron from the brain or the spinal cord.…

Q: Which of the following correctly states the importance of an action potential to muscle contration?…

A: Muscle contraction helps in the movement of muscles. It causes the muscle fibers to contract to…

Q: Which ATP-producing skeletal muscle metabolic pathway(s) require(s) oxygen?  Coupled reaction of…

A: Skeletal muscles are the muscles that are attached to bones and are in charge of body movement. They…

Q: Why does a skeletal muscle cell generate the same amount of tension with each single stimulus? O…

A: Neural control initiates the formation of actin and myosin cross bridges, leading to the sarcomere…

Q: When a(n) __________ moves along the sarcolemma, the membrane potential changes along the membrane…

A: The sarcolemma is the cell membrane of the muscle cells. When a muscle is stimulated by a neuron at…

Q: How does the nervous system control skeletal muscle? Outlining the sequence of events at the somatic…

A: Introduction: The myofibrils are made of parallel bundles of protein microfilaments referred to as…

Q: Which of the following summarizes the role of calcium in muscle contraction? opens the binding sites…

A: The actin's active-binding sites are made visible by calcium ions attaching to the protein complex…

Q: Each of the pairs of phrases below describe steps during skeletal muscie contraction. The 2nd phrase…

A: Muscle tissue is a type of tissue which contain actin , Troponin and myosin proteins so as to allow…

Q: muscle atrophy? Multiple Choice Reduction in muscle size. Fibers become weaker. Muscle loses…

A: Muscles are the ultimate units of contraction. The contraction and relaxation of muscles lead to the…

Q: Which one of the following statements is the best description of a motor unit?     A single…

A: Motor unit is defined as a single motor neuron and all of the muscle fibers it innervates.

Q: When electrically stimulating a skeletal muscle and measuring the force of muscle contraction, which…

A: A skeletal muscle needs an action potential to be trigger contraction of the muscle fibers. The…

Q: An INCREASE in has no direct effect on increasing tension during skeletal muscle contraction.…

A: The muscles which are attached to the bones, can contract voluntarily and are mainly involved in…

Q: What is NOT related to temporal summation for muscle contraction? residual Ca2+ in the muscle…

A: Temporal summation of muscle contraction can be described as a sensory summation involving the…

Q: There are 3 types of muscle... skelatal, smooth and cardiac. What type of contraction are they…

A: The skeletal muscles are the voluntary (control by our own will) whereas the smooth and cardiac…

Q: Which among the four choices below is NOT a typically way to measure muscle strength? Maximum force…

A: The maximum force a muscle or a muscle group may exert during a contraction is known as muscular…

Q: Briefly explain the steps involved in a single muscle contraction beginning at the neuromuscular…

A: Muscles are tissues that can contract and expand. The muscles can be grouped into three types based…

Q: Which of the following sites is not a site of muscle attachment? Greater trochanter, lesser…

A: The skeletal muscles attach to the bones or muscles at various sites called origin and insertions.

Q: Arrange the steps of muscle innervation and contraction in response to touching a hot plate.…

A: Sensory neurons(afferent neurons) are defined as the type of nerve cells where they get activated…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.