Homeostatic control mechanisms Require an afferent pathway informing a control center of a change in the environment. Keep levels of substances such as 02 and glucose exactly constant at all times in the blood. Are feed-forward mechanisms, with no feedback involved. Always attempt to increase the magnitude of the original stimulus.

Q: Compare and contrast neural and endocrine control systems on the basis of speed, duration  of action…

A: Nervous system is defined as the complex and highly organized part of the body where it play a major…

Q: Image source: https://anatomy adphysiology.com/homeostasis- positiveneqative-feedback-mechanisms/…

A: The ability to maintain a stable internal environment in the face of changing external conditions by…

Q: DEFINE PHYSIOLOGY Note: Do not copy in the internet

A: Introduction: The study of how the human body functions are known as physiology. It covers…

Q: In a negative feedback loop, the effector produces changes that are a. in the same direction as the…

A: Introduction  Hormones play important role in normal physiology in our body. They control various…

Q: t is a warm, summer day and you are out for a walk. Suddenly, you hear a dog bark. You turn, and see…

A: In response to the stimulus of hearing a dog bark and seeing a dog running toward you, your body…

Q: Afferent neurons: Are involved with involuntary actions O Are involved with voluntary actions Send…

A: Afferent neurons are sensory neurons. They are present in the sense organs. It conducts sensory…

Q: A neurotransmitter binds to a receptor on a muscle cell and causes sodium channels to open. This is…

A: Facilitated diffusion is a passive transport of ions, which means this process does not need energy…

Q: In describing a positive feedback loop, which of the following would be true? a) the sensor and…

A: A feedback loop maintains homeostasis in the body.

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: Define ultrastructure

A: The cell is the basic structural, functional, and biological unit of all known organisms. A cell is…

Q: What is the main source of the electrical potentials recorded from the scalp of a human subject? In…

A: Introduction  When a neuron transfers information away from the cell body and down an axon, it…

Q: An example of acclimatization is: Group of answer choices long limbs high body mass short limbs…

A: Acclimatization is the process through which an individual organism is able to adjust to a change in…

Q: How can different time scales for response be achieved in control mechanisms?

A: Adenosine phosphate (ATP) is known as the energy currency of life. It carries energy within cells to…

Q: The "All or None" response means that: A stimulus causes depolarization and repolarization…

A: "All or None " is the phenomenon that a muscle fiber will only contract to its full extent.

Q: Which of the following best describes the behavior of a gated channel? It stays open continuously…

A: There are numerous membrane proteins that function as ion channels throughout the plasma membrane.…

Q: Imagine you are sick and you have fever. Sensors on the skin and brain detect this and communicate…

A: Homeostasis refers to the mechanism of maintaining a stable internal environment. Alteration in the…

Q: Negative feedback systems keep regulated variables within a normal range by ______________ any…

A: Homeostasis is the ability of the body to manage/cope with external change or stress to maintain a…

Q: For each phase of the graph below (Resting, Stimulus, Action Potential, Hyperpolarization), indicate…

A: Direction of ions :At rest, the membranes of excitable cells are far more permeable to K+(allowing K…

Q: When a neurotransmitter binds with receptors at the membrane, it may cause sodium channels to open.…

A: The endogenous chemicals which makes neurons to communicate with each other throughout the body are…

Q: The following diagram helps explain which of the following phenomena? C fiber (nociceptive)…

A: Pain is referred to as a primary human instinct which can be briefed as a distressing sensation or…

Q: 1. daily body temperature fluxuat entrainment 2. being used to getting out of be when it gets light…

A: Entrainment : It is the synchronization or alignment of the internal biological clock rhythm,…

Q: Compared to an action potential, a graded potential is weak and depending on the stimulus strength…

A: Neuron is a vital part of nervous system that is involved in transmission of signal impulse to all…

Q: In a negative feedback loop, the effector moves the system in the   direction as the stimulus.

A: Homeostasis is the maintenance of constant internal conditions in the body despite changes in the…

Q: Which of the following statements about neurons is FALSE?  Efferent neurons carry signals away from…

A: Neurons are cells of the nervous system. They pass impulses to and from the brain in order to…

Q: Why are neural or hormonal inputs needed for slow waves to be conducted?

A: Slow waves are generated in interstitial cells of Cajal in smooth muscles. These waves spread to the…

Q: Which of the following ion movements would be expected to produce an IPSP? Opening a calcium…

A: The movement of specific ions across the membrane is responsible for generating electric or action…

Q: During your lab session, you looked at how the internal stimulator is set up to deliver a stimulus…

A: Answer is option a.) 15Hz.

Q: Match the informational signal in the left column with the appropriate category from the right…

A: Afferent fibers brings sensory information from peripheral receptors to central nervous system .…

Q: Eventually, the peak will not be able to increase in size even if the stimulation intensity…

A: The compound action potential (CAP) is defined as the summation of each nerve fiber's action…

Q: these definitions go with receptor control center stimulus homosatasis respone effector homeostasis…

A: Homeostasis is a self-regulating cycle by which the biological systems will keep up solidness while…

Q: . A self-amplifying chain of physiologicalevents is calleda. positive feedback.b. negative…

A: Physiological events are anything that is related to the body and organ system. These are the…

Q: During depolarization and during repolarization Sodium enters the cell; potassium enters the cell O…

A: We know that The majority of the cells in the body use ions to carry a charge through the cell…

Q: If a metabotropic (GPCR) receptor is activated, all of the following can occur except for Opening of…

A: G-proteins are activated by the binding of neurotransmitters to metabotropic receptors; they then…

Q: You made early morning run as part of your daily routine exercise during the quarantine period.…

A: Homeostasis is a process by which the body maintains a stable internal environment. The hypothalamus…

Q: If the blood temperature falls too low, this is also sensed by the brain and signals are sent to the…

A:

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: Nicotinic acetylcholine receptors allow both sodium and potassium to flow across the cell membrane…

A: Ach receptors stand for the acetylcholine receptors. These receptors functions in a similar manner…

Q: One of our homework questions in Anatomy 1 states Describe the relationship between homeostatic…

A: The term homeostasis is from the Greek words “homeo” meaning similar and “stasis” meaning stable. It…

Q: Draw a diagram that shows how the parts of a positivefeedback loop interact. Include set-point,…

A: A positive feedback loop occurs in nature when the product of a reaction leads to an increase in…

Q: Opening voltage-gated potassium ion channels will allow potassium ions to O enter, repolarization…

A: There are various potassium channels such as voltage-gated potassium channel, calcium-activated…

Q: Which of the following is incorrect?a. Equilibrium requires a constant input of energy.b. Positive…

A: The process by which the body's various physiological systems work together to keep everything in…

Q: Put the items in the correct order. Sensory neuron is activated. Processing of the sensory signals…

A: What is The nervous system? The nervous system is a complex network of specialized cells, tissues,…