A class of drugs called beta-blockers are commonly prescribed to cardiac patients in order to reduce their heart rate. Beta-blockers slow heart rate by reducing the conduction of action potentials through the A-V (atrioventricular) node. The most likely effect on an ECG is shorter R-R interval shorter Q-T interval longer P-R interval O longer T wave

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Q: Given this list of molecule types:(1) nucleic acid derivatives(2) fatty acid derivatives(3) peptides...

A: The hormone can be described as the body's chemical messengers which travels from the endocrine syst...

Q: Gap junctions are dynamic structures that, like conventional ion channels, are gated: they can close...

A: An animal cell comprises of various types of intercellular junctions that form both structural as we...

Q: Question 5

A: Dehydration occurs when more water and fluids leave the body than enter it. Symptoms of dehydration ...

Q: explain, with examples, why some joints changecategories as a person ages

A: Joints are the region in the body where two bones associated with each other and help in movement. I...

Q: Question 9

A: 9. Coagulation or clotting is the process in which the blood loses its fluidity and becomes a jelly ...

Q: State whether heart rate and pulse rate increase or decrease immediately after exercise. •

A: Physical exercise allows the heart muscle to become more strong and better responsible for pumping b...

Q: Describe the nature of the plasma membrane inreference to the passage of materials through it

A: The human body comprises a complex and coordinated network of cells, tissues and organs. The cells a...

Q: Which joints show evidence of degeneration in nearly all individualsas aging progresses?

A: Introduction: The process of aging is a natural phenomenon that is exhibited by every organism. With...

Q: Give the name of the structure that the phrase describes. The stage of the embryo that implants in t...

A: The continuation of species in the world is due to reproduction; either sexual or asexual. In humans...

Q: Auto immunities are relatively What usually happens to autoimmune antibody-producing clones during d...

A: Autoimmunity is the system of immune responses of an organism against its own cells, tissues and oth...

Q: Classify the three congenital heart defects—ventricular septal defect, coarctation of the aorta, and...

A: The heart is the organ of the cardiovascular system that pumps and circulates blood throughout the b...

Q: How do NK cells function?

A: Natural killer (NK) cells form cytotoxic lymphocyte cells that are critical for the innate immune sy...

Q: A _____________ reflex is monosynaptic and responds to stretching in a muscle spindle. a. withdrawal...

A: The reflex arc: Reflex:Can be defined as rapid, predictable as well as an involuntary response to st...

Q: Compare and contrast the femoral and obturator nerve composition and distribution.

A: The vertebral column, also called the backbone or spine, is a part of the axial skeleton system. Thi...

Q: The basal nuclei are located in thea. inferior cerebrum. c. midbrain.b. diencephalon. d. All of thes...

A: A group of subcortical nuclei is referred to as the basal nuclei. These basal nuclei present in the ...

Q: What is a triad?

A: In anatomy, the term triad refers to the structure found in the muscle fibers of the skeletal muscle...

Q: The cranial cavity is lined by membranes called the_____________.

A: The body cavities refers to the fluid filled space within the body which holds the internal human or...

Q: A muscle that helps an agonist by causing a similar movement or by stabilizing a joint over which th...

A: An agonist is a chemical that binds to a receptor and activates the receptor to produce a biological...

Q: Indicate in these situations the effect of plasma osmolarit, clinical outcome and how it can be rest...

A: The body works to maintain water levels and electrolyte levels in the body. The amount of water inta...

Q: What is the role of voltage gated potassium channels in action potential, also explain leak channels...

A: Introduction: The brief sequence of changes in the membrane potential following excitation is referr...

Q: State at least four functions of the kidneys other thanforming urine.

A: The bean-shaped organ found in pair in the body's abdominal cavity that functions in the urinary sys...

Q: How is the order of a reaction generally determined?

A: The order reaction is considered a consolidated power of concentration of all the reactants in the r...

Q: How do vitiligo and albinism differ? How are they similar?

A: Vitiligo is a condition in which the skin loses its pigment cells (melanocytes). This can result in ...

Q: Distinguish between innate (nonspecific) and adaptive (specific) defenses.

A: The immune system can be defined as the type of defense system present in the body. The immune syste...

Q: Identify the characteristics of the plasma membrane,cytoplasm, and nucleus

A: Cells are referred to as building blocks of an organism required for carrying out the body's metabol...

Q: HIPAA refers to:

A: HIPAA refers to the Health Insurance Portability and Accountability Act which was launched in 1996. ...

Q: Name two organ-system derivatives of each of the three germ layers.

A: The three layers formed during gastrulation from the differentiation of cells in the blastula are ca...

Q: Describe the olfactory pathways that relay sensory input to the brain.

A: Introduction: Olfactory receptors, which are bipolar neurons are located in the nasal cavity. Such r...

Q: Names of the six different cranial bones;which ones are solitary and which arebilaterally paired; an...

A: The bones that form the cranium, also called the skull, that supports the brain and the face are kno...

Q: Starting in the hypothalamus, explain how chronic exposureto cold, food deprivation, or stress can a...

A: Introduction: The thyroid gland is located at the lower part of the sides and front of the neck. It ...

Q: 1. Identify the longest muscles in the body and outline the two major joint it crosses 2. In terms ...

A: The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in ...

Q: How are signals transmitted from one end of anerve cell to the other, and from one neuron to another...

A: Neurons carrying information throughout the human body,  coordinate all the necessary functions of l...

Q: What veins collect blood from the heart muscle?

A: Veins can be defined as the type of blood vessel which generally transports deoxygenated blood in th...

Q: Human Immunodeficiency Virus infects helper T celle This is most likely to cause: O All non-specific...

A: HIV stands for Human Immunodeficiency Virus. it is a retro virus. It after entering the host cell, w...

Q: list the types of brain waves and discuss their relationshipto mental states

A: The electrical impulses in the brain are called brainwaves. Brainwaves from various neurons produce ...

Q: How do the two forms of macular degeneration differ?

A: The macula is responsible for the central, high-resolution, color vision that is possible in good li...

Q: this is not ball and socket, im confused because that's what i thought it was but that is incorrect

A:    Skeletal muscle is one of the major muscles in the body which is regulated by somatic nervous sys...

Q: Match the digestive organ listed in column B with the function listed in column A.Column A          ...

A: Life processes. It is essential activities performed by an organism to sustain life, including nutri...

Q: Why septic and anaphylactic shock cannotbe strictly classified into any single categoryof LVR shock

A: Introduction: LVR shock is an abbreviation for low venous return shock. There is low cardiac output ...

Q: A blood vessel adapted to withstand a high pulse pressure would be expected to havea. an elastic tun...

A: The vessel in which blood circulates, in the animal body, is known as a blood vessel. Arteries, vein...

Q: Compare the functions of the external intercostals and theinternal intercostals.●1 0 Identify the mu...

A: Intercostal muscle referred to as the muscle located in the rib cage. They are responsible for stabi...

Q: Oxygen, whose atomic number is eight, has three stable isotopes:  16 O,  17 O, and  18 O. Explain wh...

A: An atom is considered the smallest particle with a central nucleus in it. The atom is made up of sub...

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A: The male and female reproductive system has some similarities and differences. The development of re...

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A: Skin covers the entire body, thereby protecting the body from the outer surface. It is made of three...

Q: Identify the bones of the cranium and face, and describehow they contribute to facial features.

A: The axial endoskeleton and appendicular endoskeleton form the Human endoskeleton. The axial endoskel...

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A: Messenger RNA (mRNA) is a single-stranded molecule of RNA complementing one from DNA strands known a...

Q: 3- Structural classification of neurons: a) What anatomical characteristic determines whether a part...

A: Neurons are the basic structural unit of the central and peripheral nervous system. They get excited...

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A: In the older man who developed a cataract, the biconvex eye lens is removed by surgery for treatment...

Q: Does the atrial rate equal the ventricular rate in this ECG tracing? Explain.

A: ECG stands for electrocardiogram. It can be defined as the recording of the electrical impulse produ...