the human heart rate increases when the person is scared?

Q: when on a person's forearm could you measure pulse rate?

A: ‘Pulse’ is one of the most well-known medical terms used to measure the heartbeat. When the heart…

Q: The rate of heartbeat is accelerated by the hormone : A) adrenaline B) acetylcholine C) thyroxine D)…

A: Hormones are the chemicals synthesized by the endocrine glands in the body. Hormones reaches to the…

Q: What happens to the heart rate and cardiac output during exercise?

A: Heart rate and cardiac output are two key indicators of cardiovascular health. Heart rate, or the…

Q: you move from a sitting position to a standing position. after 2 minutes of resting in the standing…

A:

Q: heart failure occurs when

A: Congestive heart failure is commonly known as heart failure that refers to a condition in which the…

Q: activities demand more body movements? Explain. Give 2 systems that are directly affected whenever…

A: * when we exercise we feel increasing in breathing and hear beat too. * we require more oxygen when…

Q: What effect does a bigger heart have on stroke volume and heart beat?

A: Stroke Volume (SV) can be defined as the volume of blood in milliliters that is ejected from each…

Q: hy blood pressure falls despite the increase in heart rate

A: Hemorrhagic shock can be defined as the clinical syndrome which occurs due to the decline in the…

Q: Describe how the heartbeat is controlled

A: Sympathetic nervous system which includes the ‘fight and flight responses’ release neurotransmitter…

Q: You Measure Mrs. Jones' pulse as 54 beats in 30 seconds.What would you record as her pulse rate…

A: The heart produces two sounds lub and dub. One cycle consisting of one lub and one dub sound is…

Q: Which best describes blood flow through the heart? oxygenated blood comes into the heart's left…

A: The heart, the lungs, and the blood vessels function to form the round circulatory system. The 3…

Q: What happens when Heart rate Increases?

A: The heart is a well defined that they are been stated to term a muscular organ that is part of the…

Q: Compare and contrast sympathetic and parasympathetic control of heart rate

A: The sympathetic and parasympathetic nervous systems are part of the autonomic nervous system that…

Q: Describe a homeostatic mechanism that helpsregulate blood pressure.

A: Blood is an example of connective tissue and is composed of formed elements and liquid plasma.

Q: What changes can be noticed in the heart sounds in the exercise period?

A: The heart produces four sounds two of them are lub and dub. The two other sounds produce…

Q: Name hormones that have an effect on heart rate State two other factors that affect heart rate.

A: Heart rate refers to the speed of the heartbeat. It is generally calculated by the number of…

Q: Predict the effects of a drug that blocks the sympathetic nervous system on blood pressure and heart…

A: Sympathetic nervous system (SNS) and para sympathetic nervous system are the two main divisions of…

Q: What components do you think keep your heart beating regularly

A: The heartbeat is the spontaneous and rhythmic contraction/relaxation of the cardiac muscles to allow…

Q: Discuss the baroreceptor reflex and explain its influence on blood pressure and heart rate.

A: Homeostasis is the mechanism that is performed by the body's physiological processes to maintain…

Q: What is a pulse? List the locations on the body where thepulse can easily be detected.

A: Vital signs are the four medical signs that evaluate the functioning of the body whether it is…

Q: During a heart attack, the blood flow to cardiac muscle tissue is blocked, and cardiac muscle cells…

A: The heart is a major organ in the circulatory system whose function is to pump blood throughout the…

Q: PREDICT THE EFFECTS OF A DRUG THAT BLOCKS THE SYMPATHETIC NERVOUS SYSTEM ON BLOOD PRESSURE AND HEART…

A: Sympathetic nervous system regulates many homeostatic mechanisms and are well known for…

Q: During sleep a man’s blood pressure

A: Blood pressure can be defined as the pressure exerted by circulating blood during the cardiac cycle.…

Q: Why is your heart rate high after running a short distance, but not as elevated after running a much…

A: Introduction: To maintain blood circulation throughout the body, the heart beats nonstop. Its rate…

Q: Why would your heart rate increase or decrease to help maintain homeostasis when you exercise

A: There are various variables or factors that work inside the body to maintain its normal state.…

Q: Is there a change in heart rate when the subject moves from lying down to sitting?

A: The heart is the organ that pumps blood through the arteries to different parts of the body. The…

Q: True or false: blood pressure is the measure of the force of blood pushing against the wall of the…

A: Blood pressure is tge force of circulating blood on the walls of the arteries.

Q: Pulse is a direct measure of(A) blood pressure.(B) stroke volume.(C) cardiac output.(D) heart rate.

A: The pulse of a person is measured by placing one’s finger on the inside wrist of that person. The…

Q: Do hormones affect Heart rate

A: The speed at which heart beats is called heart rate it is 72 beats per minute in normal people. This…

Q: _________ raises the heart rate and blood pressure

A: The number of heartbeats per unit time measures the heart rate of a person. The pressure of blood in…

Q: A drop in blood pH causes an increase in heart rate.What is the function of this control mechanism?

A: The pH of blood is 7.4. When pH of blood changes, it may lead to acidosis and alkalosis. The buffer…

Q: You measure Mrs. Jones's pulse as 54 beats in 30 seconds. What would you record as her pulse rate (…

A: Ans. Pulse rate is normal 72 pr minute

Q: If a person‘s heart rate is 96 beats per minute, how many pulse cycles were counted in 10 seconds?

A: A heart beat rate or pulse rate or pulse cycle is the number of heart beats in one minute.  It is…

Q: How is the heart regulated by the nervous system?

A: Human Heart is a four-chambered, fibro-muscular organ. There are two atria through which the heart…

Q: How does an increase in heartbeat rate during an emergency, help a person to face the emergency?

A: When the heart pumps it distributes the blood to all parts of the body  and the blood carries the…

Q: How does heart rate help maintain homeostasis?

A: Homeostasis is defined as the state where a living organism maintains steady internal, physical and…

Q: Trace the flow of blood through the heart during one cardiac cycle.

A: The cardiac cycle is defined as the time taken for the heartbeat from its production to the…

Q: If a person counts 13 pulse cycles in 10 seconds, what is the heart rate in beats per minute?

A: Heart beats and pulse rate are used by physicians for diagnosis of heart disorders and arterial…

Q: If a person‘s heart rate is 180 beats per minute, what would be the frequency in Hz.

A: Heart rate is defined as the speed at which the heart beats. It is measured by how many times the…

Q: Which blood vessels supplies the heart tissue with oxygen and glucose

A: All blood vessels that take blood away from the heart and towards the body parts are named arteries.…

Q: In what activity or activities did your heart rate reach above 180? Why do you think it occurred?

A: Heart rate is measured by the speed of the heartbeat by calculating the number of contractions per…

Q: Drugs such as nifedipine slow the heart rate. Nifedipine can be described as what type of drug?

A: The heart is a smooth muscle organ that pumps oxygenated blood throughout the body. Deoxygenated…

Q: As the patient’s blood pressure decreased from the loss of blood, neural impulses transmitted from…

A: Blood is a body fluid in humans and other animals. It delivers necessary substances such as oxygen…

Q: To check- in Heart electrical activity use blood pressure :Select one True False

A: The heart electrical activity is measured by ECG which determines the electrical impulses generated…

Q: Which of the following would increase blood pressure? Group of answer choices Increased…

A: The parasympathetic activity or baroreflex is a mechanism of homeostasis that maintains the blood…

Q: Define a "heartbeat ," giving the sequence of events that make it up

A: Heartbeat is defined as the pulsation of the heart. It is a two-part pumping action which takes…

Q: When you have a blockage of blood flow to the heart, it will likely result in what...?

A: Heart block is an abnormal heart rhythm where the heart beats too slowly,which results in the…

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.