Exam 1: BIOS 252 / BIOS252 (Latest 2024/ 2025 Update) Anatomy and Physiology II Exam Review| Questions and Verified Answers| 100% Correct| Grade A - Chamberlain

Exam 1: BIOS 252 / BIOS252 (Latest 2024/ 2025 Update) Anatomy and Physiology II Exam Review| Questions and Verified Answers| 100% Correct| Grade A - Chamberlain Q: What is the name of the chemical that is secreted by the synaptic end bulb and is used to stimulate or inhibit another cell? A. Chemical receptors B. Meninges C. Neurotransmitters D. Saltatory conduction Answer: C. Neurotransmitters Q: Using stimulation like pressure or stretching to open a cell membrane protein channel is known as what type of receptor? A. Ligand-gated channel B. Voltage-gated channel C. Mechanically-gated channel D. Physically-gated channel Answer: C. Mechanically-gated channel Q: What is saltatory conduction? Answer: An electrical impulse that skips from node to node down the full length of an axon Q: Is saltatory conduction present in myelinated or non-myelinated neurons? Answer: Saltatory conduction is present in myelinated Q: Sarcolemma definition Answer: The fine transparent tubular sheath which envelops the fibers of skeletal muscle Q: When initiating a nerve conduction, a sodium channel is opened to allow sodium to influx into the cell. As sodium enters the cell, it depolarizes the cell (creating a change in the electrical charge of the membrane), allowing for the cell to creamy a graded potential. Once the signal reaches the axon hillock or axon of the cell, this will allow for _____________ channels found on the axon hillock or axon of the cell to flood the cell with more sodium ions and allow the continued propagation of the electrical signals down the neuron. Answer: Voltage-gated Q: What are the regulatory proteins? Answer: Troponin & tropomyosin Q: Which of the following property of muscle tissue means the ability to stretch and return to its original state? A. Extensibility B. Elasticity C. Contractility D. Hyperplasia Answer: B. Elasticity Q: Which of the following property of muscle tissue means the ability to be stimulated to be shortened or contracted? A. Extensibility B. Elasticity C. Contractility D. Hyperplasia Answer: C. Contractility Q: Sarcoplasmic reticulum definition Answer: A specialized form of the endoplasmic reticulum of muscle cells (necessary for muscle contraction and relaxation) Q: What are the functions of muscle tissue? Answer: Producing body movements, generating heat, glycemic control, stabilize body positions, storing and moving substances throughout the body Q: A Band Answer: From the beginning of one thick filament to the end of the same filament (create dark bands) Q: I band Answer: From the end of one thick filament to the beginning of the next thick filament (creates light band) Q: H zone Answer: From one end of thin filament to the beginning of the next filament Q: Z disc Answer: Provides anchorage for the actin and titan filament Q: M line Answer: The light found at the center of the thick filament, and provides anchor for the thick filament Q: Types of nervous tissue? Answer: Glia & neurons Q: Glia