What short-term changes in an animal’s cardiovascularfunction might facilitate using skeletal muscles to escapefrom a dangerous situation?

Q: Which of the following is unique to cardiac musclecells?a. Only cardiac muscle contains a…

A: The cardiac muscles show the characteristics of both smooth and striated muscles. The cells of…

Q: Whate The effects of increasing the temperature above 45 C on skeletal muscle ?

A: Skeletal muscle is one of three major muscle types, the others being cardiac muscle and smooth…

Q: How does the nervous system speciically control the muscular system?

A: The Nervous  system is the part of a  body that arranges its conduct and sends signals between…

Q: Explain the structure of cardiac muscle and how it helps produce coordinated contraction in each…

A: Cardiomyocytes or cardiac muscle cells form a highly branched cellular network in the heart. They…

Q: Striations, cylindrical cells, and multiple nuclei areobserved in ________.a. skeletal muscle onlyb.…

A: The group of cell is known as tissues, and the study of tissue is known as histology. The body of…

Q: Why should one not start exercising immediately after a heavy meal, but should wait for at least two…

A: The body requires energy to work. Any physical work demands the availability of energy molecules…

Q: An energy storage compound that can be stockpiled in muscle cells for short-term use is (a)…

A: Creatine phosphate - is an energy storage compound that can be stock piled in muscle cells for short…

Q: what is contraction in cardiac muscle cells in response to

A: Muscle cells are the cells also known as myocytes that help in the formation of muscle tissues. The…

Q: Compare the characteristics of skeletal and cardiacmuscle cell contractions.

A: Tissue comprises of structurally and functionally similar cells. It is a level of organization in…

Q: Muscles are powered by: A) Bone marrowB) Electrical impulsesC) IodineD) Gravity

A: Muscles are the tissues involved in the movement of the body parts and body. Muscles are attached to…

Q: How is electrical excitation of a skeletal muscle fiber coupled to muscle contraction? Speculate…

A: Acetylcholine is released by motor neurons which binds to receptors in the motor endplate. A neural…

Q: What happens when a muscle cell cannot generate enough ATP byaerobic respiration?

A: When a cell is very low on ATP, it will start squeezing more ATP out of ADP molecules by converting…

Q: Describe the effects of exercise on cardiac output and heart rate

A: The body functions by the use of energy which is produced by the use of oxygen that is provided by…

Q: Why do the cardiac muscles cells demonstrateautorhythmicity?

A: Autorhythmicity is a property of specialized cardiac cells called pace maker cells that directly…

Q: Identify the ventricle of the heart that pumps oxygendepletedblood and the arteries of the body that…

A: Heart is one of the vital organs of the body which is responsible for pumping blood to different…

Q: Where does the energy of the weightlifter come from and where does it go? Describe the structure of…

A: Adenosine Triphosphate ATP is the energy carrier molecule and is required for all types of cellular…

Q: Cardiac muscles differ from skeletal muscles in thatthey ________.a. are striatedb. utilize aerobic…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and…

Q: Contrast the structure of cardiac and skeletal muscle?

A: The particular organ system, which consists of several types of cardiac, skeletal, and smooth…

Q: Discuss why the short term secretion of adrenaline important for athletes running a 100m race

A: Adrenal medulla of the adrenal gland consists of glandular cells called as the chromaffin cells…

Q: Explain the following diagram

A: Acetylcholine (ACh) is an organic chemical that functions in the brain and body of many types of…

Q: What does it mean when we say cardiac muscle contraction is a graded contraction?

A: Contractions of the heart (heartbeats) are controlled by specialized cardiac muscle cells.

Q: Compare the cardiovascular responses to a single bout of submaximal aerobic exercise between a child…

A: Movements such as during exercise require high consumption of energy for which the cardiovascular…

Q: Which of the following is NOT a stock form of the key molecules for energy generation in muscle? A.…

A: Adenosine triphosphate (ATP) is used to generate energy in muscles. A significant amount of ATP is…

Q: describe the structure of vertebrate skeletal muscle, from a whole muscle through individual muscle…

A: Skeletal muscle is a specific contractile tissue found in creatures what capacities to move a life…

Q: In most fish, the bulk of the trunk muscles are fast glycolytic, which are not used for steady…

A: Introduction :- The metabolic mechanism that transforms glucose to pyruvic acid is known as…

Q: With which of the following bodyorgan is 'pace-maker' associated?A. Liver…

A: Pacemaker is a device that contains generator and wires. It is operated by a battery present in it.

Q: Name the hormone responsible fo increased blood supply to muscles.

A: Hormones are chemical messengers that are secreted directly into the blood, which carries them to…

Q: Unlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why…

A: Cardiac muscle or myocardium is the muscle that forms the heart tissue. These are striated and…

Q: The EMG is a recording of: * The action potentials of the motor nerves supplying the muscle fibers.…

A: Introduction: Action potential is a short-lasting event in which the electrical membrane potential…

Q: NAME THE CHEMICAL TRANSMISSION AND THE NERVOUS SYSTEM BETWEEN A MOTOR NEURONE AND A SKELETAL MUSCLE.…

A: Answer: Introduction: Most skeletal muscle is connected to bone and its contraction it has role in…

Q: Chickens are capable of only brief bursts of flight, and their flying muscles consist of fast…

A: Introduction: Wings of birds are responsible for giving them flight. They possess feathers and the…

Q: a. When part of the heart muscle dies, how does itheal?b. How would the new tissue affect the…

A: The heart is a vital organ for survival, as it pumps blood throughout the body. The heart is made up…

Q: Given the functions of the cardiovascular and respiratory systems, why would heart rate and…

A: Both the system( cardiovascular and respiratory) functions together to match the oxygen demands of…

Q: Describe the organization of a motor unit in vertebrate skeletalmuscle, and explain how recruitment…

A: Skeletal muscles are attached to bones by tendons, and they produce All the movements of body parts…

Q: What is the ratio of oxygen bound to myoglobin to that directly dissolved in the water of sperm…

A: Myoglobin is a heam-containing globular protein that was found in the myocytes of the heart and…

Q: If calcium cannot be returned to the SR quickly after a muscle contraction, how would this affect…

A: The cardiovascular system is sometimes called a blood-vascular system. In sustaining homeostasis,…

Q: Where are cardiac muscle cells found in the heart? O myocardium O pericardium O endocardium O great…

A: The heart is the main organ of the circulatory system of the body. It is located behind the…

Q: What effect does a pacemaker potential have on a smooth muscle cell?

A: Pacemaker cells, which are specialised cardiac muscle cells that directly control heart rate,…

Q: State Boyle’s Law and relate this law to the specific sequence of events (muscle…

A: The Boyle's law states that for a constant amount of an ideal gas kept at a constant temperature,…

Q: What is the effect of nitric oxide and ANP have on smooth muscle of muscular

A: Nitric oxide (NO) act as a vasodilator so it relaxes the smooth muscles. NO is a paracrine signaling…

Q: Predict the effect of the following on muscle contraction: A. Bitten by a black widow B. Curare C.…

A: Muscle contraction refers to the generation of tension at specific sites in the muscle fibers. It…

Q: Muscle soreness following depletion of oxygen during strenuous exercise is due in part to a buildup…

A: Introduction :- Muscle soreness is a side effect of the stress that exercise places on muscles. It's…

Q: During exercise, activation of alpha-adrenergic receptors in skeletal muscle arterioles: A)is…

A: *There are three types of adrenergic receptors are present alpha beta-1 beta-2 *Alpha receptors…

Q: To increase the strength ofthe muscle work is the musclecontraction intenselyincreased?

A: Muscles are soft tissues present in most of the animals. They contain protein filaments called actin…

Q: Coordinated contractions of cardiac muscle are controlled by pacemaker cells, allow for your heart…

A: The pacemaker cells or SA node generate slow positive increase in voltage across the cells membrane…

Q: Create a cool down for soccer, Remember to cover the basic ground rules:About 10 minutes in…

A: Cooling down after a game is as important as warm up before the game. Cooling down increases fitness…

Nutrition and diet

We are involved in several daily activities. These actions need a significant quantity of energy. The food we eat provides this energy. Food is necessary for development, repair, and other living activities since it supplies energy. All of these are part of the living practice known as nutrition. Nutrition is the study of nutrients in food, how the body uses them, and the relationship between diet, health, and disease. Nutritionists employ concepts from molecular biology, biochemistry, and genetics to understand how nutrients affect the human body. Nutrition also looks at how people can use their diet to reduce their risk of disease, as well as what happens when they ingest too much or too little of a nutrient and how allergies emerge.