Trace the normal path of an electrical impulse (action potential) through the conducting system of the heart.

Q: Conduction of sound from the middle ear to the internal ear occurs via vibration of the (a) malleus ...

A: Conduction of sound waves can be defined as a phenomenon in which sound travels within a medium, cau...

Q: Which of the following is NOT performed by the plasmalemma? a. accommodating muscle fiber stretch b....

A: Plasmalemma is the plasma membrane of the cell. It contains the cytoplasm and nucleus of the cell. P...

Q: (Short Answer - 5 Sentences Max) - ATP, a nucleic acid, is the energy currency of the cell. Explain ...

A: Adenosine Triphosphate(ATP) is a nucleic acid molecule which serves as an energy currency/packet for...

Q: From what flower structure(s) is a fruit derived?

A: A pistil is a female part of the flower that includes stigma, style, ovule, and ovary. Stigma is the...

Q: MHC class I proteins: present endogenous antigens to the immune system   both are on all nucleate...

A: MHC class I molecules are one of two essential classes of significant histocompatibility complex (MH...

Q: If a castrated rat was injected with cortisol over several weeks, what would happen to his blood lev...

A: Thymus gland is a primary lymphoid organ located in the neck and is responsible for the maturation a...

Q: HIV testing uses a(n) ________________ELISA. direct indirect

A: Antibody tests can take 23 to 90 days to identify HIV disease after exposure. Most quick tests and t...

Q: Distinguish between sensation and perception.

A: Something that triggers a response or a reaction and permits the organisms (plants and animals) to r...

Q: Oxidative Capacity of Muscles 2 Which of the following is a response associated with increasing oxid...

A: It is noted that during heavy exercises the share of the cardiac output of muscle tissues can increa...

Q: Which is a primary lymphoid organ? thymus gland both the thymus gland and red bone marrow red b...

A: The lymphatic system is a part of the circulatory system and the immune system. It is composed of a ...

Q: Explain the difference between cell-mediated (cellular) immunity and antibody-mediated (humoral) imm...

A: Immunity can be defined as the mechanism in which the body resists towards the attack of the pathoge...

Q: (a) What is myelin? (b) How does the myelination process differ in the CNS and PNS?

A: a. Myelin can be defined as the insulating sheath wrap around the nerve. It increases the efficiency...

Q: Describe the mechanisms that prevent food from enteringthe nasal cavity and larynx during swallowing

A: In order to properly absorb all the nutrients from the body, the ingested food must be digested, and...

Q: Anatomy and Physiology Question

A: Subclavian artery It serves as the initiation of the arteries that supply the upper limbs which ari...

Q: Evaluate the risk of using hormones and antibiotics on animals raised for food.

A: Antibiotics are used in animal farming to prevent the spread of diseases due to poor maintenance. Gr...

Q: Name the endocrine gland labeled with B

A:    Endocrine system has ductless glands that secrete chemical messengers called hormones that circul...

Q: Label B only

A: Pancreas is an organ that is located in the abdomen. Its major role is to conver the food intake int...

Q: How do basophils respond to an injury?

A: There are three types of blood cells, red blood cells or the erythrocytes, white blood cells, and pl...

Q: What is the difference between vellus hair and terminalhair?

A: Hair is a part of the integumentary system of the body, along with skin and nails. It is a strand of...

Q: What is the function of heart valves? Why might a person with a leakyheart valve feel short of breat...

A: The human heart comprises four chambers which include two ventricles and two atria. There are valves...

Q: __________ and __________ are cellular extensions that move substances across cell surfaces and prop...

A: Certain cells have structures extending from the cell surface. The three types of cell extensions ar...

Q: Match these ear structures with their functions Cochlea V [ Choose To maintain static equilibrium in...

A: Ears are paired sense organs that are located on either sides of the head. These organs are the prim...

Q: Which gland produces hormones via humoral control thyroid parathyroid both thyroid and parathyr...

A:    Endocrine system has ductless glands that secrete chemical messengers called hormones that circul...

Q: When a single photon from a source of light hits the retina in the eye, it triggers a signal that tr...

A: Photoreceptor is defined as a type of specialized neuron that has the ability to detect the light an...

Q: Which of the following skin conditions orappearances would most likely result fromliver failure?a. p...

A: There are different types of skin conditions in the body. One may be due to secretion of any toxic s...

Q: The corners of the mouth are pulled inferiorly into a frownposition by the contraction of what muscl...

A: The human face is made out of various muscles that control fine development to deliver outward appea...

Q: The nasal cavity is divided by the nasal septum into right and lefta. nares.b. vestibules.c. fossae....

A: The nasal cavity is a large, air filled space that is found behind the nose. This structure helps th...

Q: How might reduced segmental contractions affect the digestive process?

A: Human gastrointestinal motility follows three basic patterns: segmentation contractions, peristalsis...

Q: Compare and contrast short-term and long-term memory, and describe the parts of the brain involved w...

A: The theory suggests that left-brained or right-brained meaning that one side of their brain is power...

Q: Blake’s doctor found out that, although Blake is Rh−, he received Rh+ blood for the first time. Will...

A: The transmembrane proteins which are expressed on the erythrocyte's surface are termed Rhesus antige...

Q: Which of the following statement(s) is false? a. dorsal body cavity contains brain and spinal cordb....

A: Body cavity is the space within the body of an animal. Body cavity usually contains fluid and contai...

Q: Define postsynaptic

A: Postsynaptic can be defined as neuron responsible for receiving the neurotransmitter after it crosse...

Q: How does parathyroid hormone maintain calcium homeostasis?

A: The parathyroid gland is located in the neck at the surface of the thyroid gland. It is a pea-size g...

Q: (Short Answer - 8 Sentences Max) The sodium-potassium pump maintains the electrochemical gradient ac...

A: An electrochemical gradient is a gradient of electrochemical potential, usually for an ion that can ...

Q: True or false. Appropriate atmospheric pressure is not required for breathing and gas exchange in th...

A: Breathing is a process where the air travels in and out of the lungs  that facilates the gas exchang...

Q: (Short Answer - 7 Sentences Max) The resting membrane potential is the voltage measured in resting s...

A: The lipid bilayer is not permeable to ions and charged molecules. Ions use the ion channels to move ...

Q: An increase in renin is caused bya. a decrease in sodium intake.b. a decrease in renal sympathetic n...

A: Renin is a hormone that is synthesized by the kidney's juxtaglomerular cells as a part of the Renin-...

Q: Why is it necessary to have an action potential (electrical signal) in the muscle for contraction? a...

A: An action potential is defined as a  sudden, rapid change in the membrane or voltage potential acros...

Q: Which is not an effector Tlymphocyte?cytoxic T lymphocyte helper T lymphocyte memory T lymphocyte

A: Human body has an extremely well developed immune system for the protection against pathogens. Human...

Q: 2 10 1. 11 Label the following veins: (some are repeated) Common Illiac Internal Iliac 4 12 _5 Exter...

A:     Hi! Thanks for your question. As you have posted multiple questions and have not mentioned which...

Q: 9 Match the numbers in the figure with the corresponding lobes or sulci in the ist below 2 1 6. 3 7 ...

A: The nervous system is composed of the brain, spinal cord, and nerves. The brain is divided into thre...

Q: Match these regions of the brain to their major functions Cerebellum V [ Choose ] Muscle coordinatio...

A: The brain  is the most complex part of the human body and is the central organ of the human nervous ...

Q: Describe cardiac muscle tissue and compare its structure and physiology to the other types?

A: Muscle is a connective tissue that plays an important role in making the human body move. The cells ...

Q: Why are nails so hard?

A: The nails can be described as the tissues which grow from the epidermal tissue called nail matrix su...

Q: The shoulder girdle consists of two bones: a. radius and ulna. b. clavicle and scapula. c. tibia and...

A: In the appendicular skeleton, the set of bones that connects on each side to the arm are termed as p...

Q: What is MAC I and MAC II?

A: The complement system (cascade) is a component of the non-specific immune system (innate). It can re...

Q: List the parts of the upper respiratory system commonly infected by Streptococcus pneumoniae and Hae...

A: The upper respiratory system includes the larynx, nose, pharynx (throat), and nasal cavity. Both Hae...

Q: Which of the following statement(s) about the regional terms is true? a. the body is divided into tw...

A: Human anatomy refers to the study of body structures. It can be studied into two ways - systematical...

Q: A kidney stone blocking a ureter would interfere with urine flow to which organ? Why would the pain ...

A: The kidneys present in the vertebrates are important for the removal of wastes, toxins, and drugs wi...

Q: What distinguishes the obstruction in asthma from that in chronic bronchitis?

A: Asthma and chronic bronchitis are respiratory disorders characterized by inflammation of the airways...