BIO 1314: Anatomy & Physiology I Units 7 & 8 Certification Exam Examples Questions And Answers Solved.

electrical impulses, nerve impulses, chemical messenger - correct answer the general purpose of the nervous system is to coordinate the function of all body cells and maintain homeostasis using ______, ______ and ______ central nervous system - correct answer the ______ consists of the brain and spinal cord peripheral nervous system - correct answer the ______ consists of afferent and efferent motor neurons somatic - correct answer ______ motor nerves are under voluntary control autonomic - correct answer ______ motor nerves are under involuntary control neuron - correct answer a single nerve cell nerve - correct answer a bundle of neuron axons wrapped in fibrous connective tissue that insulates them from the rest of the body ganglion - correct answer a mass of neuron cell bodies found in the PNS excitability, conductivity, secretion - correct answer 3 properties of neurons afferent - correct answer ______ neurons detect a variety of stimuli and send messages to the CNS interneuron - correct answer ______ is found in the integrating center; receives signal from afferent neurons and send out motor responses; 90% of all neurons efferent - correct answer ______ neurons carry out motor responses to effectors in response to stimuli neuroglia - correct answer support cells that aid in the functions of neurons astrocyte, oligodendrocyte, microglia, ependymal cell - correct answer 4 types of neuroglia resting membrane potential - correct answer polarization of a neuron due to differences in external and internal ion concentrations -70 - correct answer typical RMP is ______ mV -55 - correct answer threshold of action potentials is ______ mV action potential - correct answer a rapid voltage change in which a plasma membrane briefly reverses electrical polarity; has a self-propagating effect that produces a traveling wave of excitation in nerve and muscle cells neural synapse - correct answer a junction at the end of a neuron axon terminal where it stimulates another cell by way of chemical messengers called neurotransmitters myoneural synapse - correct answer junction between a neuron and a muscle cell neurotransmitter - correct answer chemical messengers that are released by an axon presynaptic membrane acetylcholine, amino acid, monoamine, neuropeptide - correct answer 4 classes of neurotransmitters glutamate - correct answer excitatory amino acid in the brain GABA - correct answer inhibitory amino acid in the brain aspartate - correct answer excitatory amino acid in the spinal cord glycine - correct answer inhibitory amino acid in the spinal cord catecholamine - correct answer ______ is a group of commonly known monoamine norepinephrine, epinephrine, serotonin, histamine - correct answer 4 types of catecholamine (Never Eat Sour Hummus) excitatory postsynaptic potential (EPSP) - correct answer neurotransmitters that elicit an excitatory response inhibitory postsynaptic potential (IPSP) - correct answer neurotransmitters that elicit an inhibitory response summation - correct answer the process of adding up postsynaptic potentials and responding to their net effect anesthetic - correct answer without sensation proprioception - correct answer subconscious perception of the position and movement of the body reflex arc - correct answer a simple neuron pathway that mediates a reflex cerebrum, cerebellum, brainstem - correct answer 3 major components of the brain cerebrum - correct answer part of the brain responsible for sensory, perception, language, memory, thoughts, comprehension, and conscientiousness cerebral hemisphere - correct answer the brain is divided into 2 ______ longitudinal fissure - correct answer hemispheres in the brain are divided by a deep groove, the ______ cerebral cortex - correct answer outer layer of the hemispheres that makes up