What would happen if the heart were not able to relax between contractions? The heart would no longer pump blood – because without relaxation, the heart cannot fill with blood. No change in heart function – contractions are the important part. The heart would pump more blood out with each heartbeat.

Q: The pacemaker cardiac muscle cells rely on ______________ for their action potentials. a. Na+ leak…

A: The pacemaker cells create rhythmic impulses which set the pace for pumping the blood. The pacemaker…

Q: Katrina has an aldosterone imbalance. What does Catrinas hormone feedback loop look like? When…

A: Introduction :-

Q: Excericse affects your heart rate. Then describe how the action potential graph would change due to…

A: While exercise has its own benefits, combining it with a balanced diet is the most effective…

Q: "After an action potential has just passed through the axon hillock, the voltage-gated Na+ channels…

A: Thank you for the question  Answer : If a second action potential can be generated it refers to as…

Q: Say if the following cells are excitable or not: 1. Neuron: 2. Skeletal muscle: 3. Skin: 4. Smooth…

A: Chemicals, cells, tissues, organs, organ systems, and organisms make up the human body's…

Q: The sodium inactivat

A: Answer  This graph shows the generation of Action Potential. Action potential is a sequence of…

Q: Let's say you are at the dentist and you need numbing, so Lidocaine is used. Ahhh, you feel nothing.…

A: Anesthesia is used to block pain sensations. It is of two types namely local and general. Local…

Q: [ANIMAL PHYSIOLOGY] You are probably quite nervous about the exam. You notice that your heartbeat is…

A: It is one of the common observation during exam;There is sort of nervousness in us; occur may be due…

Q: Heurotransmitters and their respective receptors influence the propagation of action potentials. Why…

A: Hormones are defined as the type of chemical messengers that are directly released into the…

Q: You take a bite of a Fugu cake made with fresh puffer fish liver, and your lips rapidly develop a…

A: Introduction: Pufferfish poisoning can cause a constellation of symptoms including a tingling…

Q: Atropine works by blocking acetylcholine receptors. If you add acetylcholine to the heart, followed…

A: Many vital physiological processes in the human body are regulated by the autonomic nervous system…

Q: ted to design a drug that interfered specifically with skeletal muscle, without effecting cardiac or…

A: Drug design regularly alluded to as a rational medication plan or just reasonable plan is the…

Q: At the axon terminus, gates for a new ion open. What is the ion and which direction does it flow…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: From the time an action potential reaches the axon terminal of a motor neuron until cross bridge…

A: Muscle contraction happens when the sarcomeres are shortened, when the thick and thin fibers slip…

Q: Activation of what receptor directly causes stimulation of the heart? a-1 a-2 B-1 B-2 B-3

A: Mostly all blood vessels have both alpha and beta receptors. In general, Alpha-adrenergic receptors…

Q: The motor end plate is extensively folded to allow for a greater number of what structures? Terminal…

A: Motor end plate -the flattened end of a motor neuron that transmits neural impulses to a muscle.…

Q: A stronger stimulus means that the action potentials traveling down your nerves will have a higher…

A: Nerve is a complex structure comprising of a collection of neurone, blood vessels, lymph vessels and…

Q: A nerve impulse travels faster in small myelinated fibers large myelinated fibers large unmyelinated…

A: Answer : large myelinated fibres. - at the speed of 179-268 miles per hour.

Q: What responses are generated by the nervous system when you run on a treadmill? Include an example…

A: The Autonomic Nervous System (ANS) can be classified into two major categories. Those two categories…

Q: During depolarization, the membrane potential becomes more positive. O True O False

A: Every cell in our body has cell membrane that separates it from the outer environment tissue, The…

Q: True or false: V1 simple cells receive input from layer 4C cells via excitatory receptors.

A: The correct response is True.

Q: A patient is given a drug that blocks the L-Type calcium channel blocker. Which phase of the action…

A: Signal transduction pathways translate signals received at the cell's surface into cellular…

Q: Botulism is a disease that was associated to eating out of cans that had been contaminated by a…

A: Introduction: The muscle contraction occurs when a neural signal reaches the neuromuscular junction…

Q: What is the role of Ca2+ in the shape and duration of an action potential. (Cardiac muscle cell)

A: The duration of an action potential for cardiac muscle cell is between 200-250 milliseconds. There…

Q: You are recording from a funny-looking cell. You hold the cell at various voltages and record the…

A: This experiment investigates the permeability of a cell to K+ ions. By comparing the current…

Q: ATP is used to power the creation of a neuron's resting potential. True False

A: Resting potential of the neuron is -70 mV.

Q: Response Afferent Efferent Balance pathway pathway Effector Receptor Receptor IMBALANCE Control…

A: Homeostasis is the essence of the life of warm-blooded organisms on the earth. Due to the varying…

Q: The nervous system the functions of body parts and allows animals to respond to external and…

A: Nervous system is command center of the body which functions to control the movements, responses to…

Q: During synaptic transmission, neurotransmitters help to open gates on the postsynaptic skeletal…

A: Excitation in pre-synaptic membrane => opening of calcium ion VGIC (voltage gated ion…

Q: What does rhe binding of ACh to nicotinic receptors of skeletal muscle cells directly cause?…

A: Muscle contraction is the activation of tension-generating sites within muscle fibers. In…

Q: Which of the following would NOT allow you to determine whether a neurotransmitter’s release is…

A: Introduction :-  Neurotransmitters are chemical compounds or messengers that are synthesized in…

Q: The inward rectifier does not:   A. Conduct potassium.   B. Carry inward current during the action…

A: Ion channels are transmembrane proteins that can form pores for the passage of ions through the…

Q: Part i) Label & describe what is happening at each letter in the following process. Part ii) List…

A: The living organisms try to maintain a constant level of different variables in their body that…

Q: ells have an) recеptor at IS ais0 Dadrenergic, muscarinic D adrenergic, nicotinic O cholinergic,…

A: Muscarinic receptors are G-coupled protein receptors. On the other hand nicotinic receptors are able…

Q: opens calcium ion channels CAMP glucose mobilization IP3 smooth muscle relaxation DAG activates…

A: Biological pathways are complex mechanisms that require the involvement of various factors and…

Q: What component of control mechanism produces a response in the body? Group of answer choices…

A: The control centre of the control mechanism decides what kind of response is to be made. There are…

Q: An increase in the magnitude of depolarization by a graded potential will increase the threshold…

A: Graded potentials occur in plasma membrane of cells but in neurons they occur in the synaptic…

Q: Extracellular recordings create a distinct action potential. Choose the option that best describes…

A: Action potential is a kind of impulse that arises due to the stimulation of the neuron. It consists…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.