PNB 2264 Final Exam With 100% Correct Answers 2024/2025

PNB 2264 Final Exam With 100% Correct Answers 2024/2025 which of the following tissues lacks a blood supply -hyaline cartilage -stratified squamous epithelium -simple squamous epithelium -columnar epithelium in the small intestine -all of the above are avascular - answerall of the above are avascular choose the answer that best illustrates hierarch of organization - organs are made up of tissues and tissues are made up of cells - diffusion occurs down a concentration gradient - tissues are made up of organs and organs up of cells - all of the above - answerorgans are made up of tissues and tissues are made up of cells the bacteria responsible for food poisoning secrete a toxin that breaks down intercellular junction between cells in your digestive system, allowing them to enter your tissues and make you sick. This toxin should allow the bacteria to enter the body -transcellularly -paracellularly -both of the above -neither of the above - answerparacellularly Increasing intensity of a pressure stimulus (applied to the same spot on your finger) is coded by ____ (assume threshold is met) -increasing amplitude of receptor potential -increasing frequency of afferent action potentials at first node of ranvier -increasing frequency of afferent action potential of axon terminal -all of the above - answerall of the above with respect skeletal muscle contraction: -a single motor neuron can innervate multiple muscle fibers -at any given time, the sarcoplasmic reticulum contains a high concentration of calcium, or zero calcium -every muscle fiber in a particular muscle group (bicep) contracts together -a muscle fiber can be innervated by multiple neurons - answera single motor neuron can innervate multiple muscle fibers in a typical neuron, the density of voltage gated channels is highest in the -dendrites -node -internode -axon hillock - answeraxon hillock hypocalcemia is a disorder characterized by abnormally low calcium in the blood and interstitial fluid. This disorder would impact the nervous system because -action potentials would not fire -neurotransmitter would not be released -both of the above are true -neither of the above are true - answerneurotransmitter would not be released within the axon, communication is most often ____. Within the synapse communication is most often ____ -chemical, chemical -electrical, chemical -electrical, electrical -chemical, electrical - answerelectrical, chemical which of the following is an example of sensory transduction? -the mechanical energy of a pressure stimulus is converted to a receptor potential -analog to digital conversion -a rod absorbs a photon of light, but it fails to produce a receptor potential -the mechanical energy of a pressure stimulus is converted to the chemical energy of an action potential - answerthe mechanical energy of a p