QUESTION 6 At the neuromuscular junction, a neurotransmitter called open, allowing an influx of OA. Epinephrine; calcium OB. Acetylcholine; sodium OC. Acetylcholine; potassium OD. Epinephrine; sodium ions. 13 is released. When it binds to receptors on the muscle fiber, they

Q: QUESTION 10 Endurance training increase the number of: O slow fibers, which are fatigue-resistant O…

A: Muscle fibres can be defined as the muscle cells that are functionally accountable for controlling…

Q: Which is/are an electrical signal?

A: The nervous system includes the use of electrical signals for the transmission of impulses from…

Q: question 3

A: 1. With age the collagen increases in the tissues. Collagen is stiff as compared to muscles.

Q: Which of this muscle is found in heart? O cardiac muscle O smooth muscle O skeletal muscle

A: Muscles are in the form of contractile fibres varying in lengths and form muscular tissue. The…

Q: When an individual sarcomere undergo contraction, which of the following happens? H band and I band…

A: A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main…

Q: UESTION 1 nge the three types of muscle from the one in which the calcium that causes contraction…

A: Sarcomere is the contractile unit of each muscle. The contractions in muscle cells are initiated by…

Q: na synapse: O The pre-synaptic cell is always a neuron The post-synaptic cell is always a neuron…

A: A presynaptic cell is a cell that produces action potential and transmutes it to the postsynaptic…

Q: QUESTION 2 In an electrical synapse: Neurotransmitter release triggers the opening of ion channels…

A: A synapse is a connection between one neuron's axon terminal and the dendrite of the next neuron.…

Q: QUESTION 3 Some hormones bind to ion channels on neurons and cause them to open. This would be an…

A: Hormones chemical messenger present in the blood circulation. hormones are secreted by glands…

Q: QUESTION 8 What are 'silent synapses? Synapses with only AMPARS in their postsynaptic surface…

A: The site of contact between two nerves is known as a synapse. There are electrical synapses and…

Q: Considering these events, what is the right sequence in muscle contraction? i. Ca2+ released from…

A: Muscles are the connective tissues that are involved in the movement by their contraction and…

Q: QUESTION 10 Which of the following is not a phase of muscle contraction? O A. Excitation O B.…

A: The question is asking us to identify which of the given options is not a phase of muscle…

Q: What happens when troponin and tropomyosin block the active sites of actin? O The muscle contraction…

A: Troponin is basically a complex of three regulatory proteins which are troponin I, troponin C, and…

Q: Which of the following statements is not correct? +30! -F Membrane Potential (mV) H D. .B -70- A C…

A: The picture is showing the action potential curve. The action potential is generated on receiving…

Q: The ____ detect changes in muscle length; the _____ signal changes in muscle tension     A. Golgi…

A: The sliding filament theory is given for explaining the mechanism of contraction and relaxation in…

Q: Question 43 Which of these is NOT a joint? Meeting of the femur and tibia Femur and sciatic nerve…

A: An articulation or connection formed between two bones that functions to support movement and hold…

Q: QUESTION 4 Which of the following is part of the central nervous system? Neurons that transmit…

A: The nervous system comprises the brain, spinal cord and nerves. It transmits electrochemical signals…

Q: Question 9 of 16 Which of the following causes the merging of synaptic vesicles with the synaptic…

A: In this question synaptic transmission of impulse is shown. So synapse is a connecting point between…

Q: Question 41 Which of the following is true of Gap Junctions in cardiac mucsle. OA. Pairs of…

A: Gap junctions in the cardiovascular muscle are framed by connexins, which are a group of…

Q: In a contractile unit of muscle, "thin" filaments are composed of А. O A. calcium. O B. actin. OC.…

A: Muscle contraction leads to shorting the length of muscle. Muscle contraction implies that movement…

Q: Question 2 of 16 The relatively light portion of the A band of skeletal muscle Select the correct…

A: Skeletal muscle- Skeletal muscle forms about 40-50% of body mass and is responsible for movement and…

Q: The part of the muscle that is enclosed in perimyskum. The part of a muscle fiber that aids in…

A: Hello you have asked multiple subparts questions. We will be able to answer only first three. For…

Q: None of the other answers. O Contract more quickly O Contain less myoglobin ESTION 4 muscle, when…

A: The two types of skeletal muscle fibers are slow-twitch (type I) and fast-twitch (type II). Twitch”…

Q: QUESTION 4 If you open an Na+ channel in a typical neuron: Na+ will enter the cell, and the cell…

A: Role of sodium channels in typical neurons.

Q: QUESTION 13 Which of the following are not criteria for a substance to be detined as a…

A: Note: We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: Question 4 of 16 The physiologic event that takes place at the sarcolemma of a skeletal muscle cell…

A: The skeletal muscles are under the control of central nervous system that regulates the contraction…

Q: QUESTION 6 A muscle organ shortens during: eccentric contraction O isometric contraction O…

A: According to our guidelines we can answer only the first three supbarts of a question. So, upload…

Q: Which of these processes need ATP most? O Detachment of myosin head O Release of calcium O None of…

A: Contraction of muscles is controlled by two important proteins, actin and myosin.  In muscle cells,…

Q: What is the basic functional unit of a myofibril? a. endomysium b. sarcomere c. muscle fiber d. gap…

A: Muscles are specialized tissues which play an important role in body movement along with bones. They…

Q: A. Toadfish Fibers, 16°C Force [Free Calcium] 0.0 W 0.2 0.6 Tim Toadfish are fish that can produce…

A: The muscle contraction is referred to as a tetanus if the frequency of action potentials produced…

Q: QUESTION 49 Which of the following is not an appropriate strategy to prevent low back pain O a. When…

A: When lifting an object (assuming a heavy one), it should be kept close to the body so as to reduce…

Q: Question 5 of 18 When a threshold or a minimum magnitude of voltage fluctuation is reached, Select…

A: The neurons are responsible for generation and transmission of nerve impulses. They contain specific…

Q: Identify the molecule which binds calcium ions after they enter the synaptic bouton via VG Ca++…

A: Calcium along with Troponin, Tropomyosin, Myosin brings about muscle contraction and hence is not an…

Q: Most meat consumed in the average human diet consists of skeletal muscle of animals such as chickens…

A: Muscle fibres, connective and adipose tissues, and other components make up skeletal muscle. The…

Q: QUESTION 15 What section of a sarcomere does not shorten during muscle contraction? Al Al Z disk…

A: INTRODUCTION Sarcomere It is a part of a striated muscle, which is a functional unit and works in…

Q: QUESTION 7 How do HCN channels allow for spontaneous generation of action potentials? HCN channels…

A: HCN channels, which are hyperpolarization-activated and cyclic nucleotide-gated, were first…

Q: QUESTION 9 The semilunar (V-a) valves prevent blood flow from: artery to ventricle O ventricle to…

A: Semilunar valves are located between the ventricles and the two major arteries.The aortic valve is…

Q: HAIKG of the falling phase, the membrane potential is positive. This is because in the previous…

A: Falling phase- The closure of sodium channels and the stimulation of potassium channels causes the…

Q: Questions no 28 asap

A: We can say that The basic unit of muscle contraction present between two Z lines on the surface of…

Q: Question 1 In a NMJ, what happens to the sarcolemma when acetylcholine is released into the synpatic…

A: A neuromuscular junction or a myoneural junction is a synapse between the terminal end of a motor…

Q: The first heart sound is due to the: closing of the atrioventricular valves O closing of the…

A: Heart,  is the main organ of circulatory system in vertebrates, It is located on the ventral side of…

Q: The transverse tubules store and release calcium ions (Ca<") in response to an action potential in a…

A: The transverse tubules are formed by phospholipid bilayer and play a significant role in the…

Q: QUESTION 19 Which of the following is when muscle contraction occurs with a single electrical shock?…

A: The question is asking to identify the type of muscle contraction that occurs when a muscle is…

Q: In a voltage clamp: O A. A constant current across the membrane is maintained in order to counter…

A: Difference of ionic potential is present across the membranes. This results in the flow of ions from…

Q: QUESTION 2 The transverse tubules store and release calcium ions (Ca2+) in response to an action…

A: A muscle is composed of a group of muscle fibers, and the plasma membrane of the muscle fiber is…

Q: What do synaptic vesicles of a neuromuscular junction contain?   a serotonin   b sodium   c…

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