Nervous System Functions and Components Quiz

Integration and communication, maintains homeostasis, acts as control centre of body

Central Nervous System (CNS) and Peripheral Nervous System (PNS)

Generate electrochemical nerve impulses to transmit information

<p>Motor (afferent, receptor), Sensory (efferent, effector), Interneurons (connector, association, relay)</p> Signup and view all the answers

<p>Speeds up nerve impulse, protects the axon from damage, insulates against adjacent fibers</p> Signup and view all the answers

<p>Increases nerve transmission by allowing nerve impulses to jump between these gaps</p> Signup and view all the answers

<p>A strong stimulus produces more nerve impulses in a given time rate of impulse due to affecting the nerve fibre diameter.</p> Signup and view all the answers

<p>Myelin accelerates impulse conduction by enabling saltatory conduction in myelinated fibres.</p> Signup and view all the answers

<p>Continuous conduction involves depolarisation of one area, opening of voltage-gated Na+ channels, and movement of Na+ ions along the membrane.</p> Signup and view all the answers

<p>The refractory period ensures that the sodium channels cannot reopen immediately after an action potential, preventing backward movement.</p> Signup and view all the answers

<p>Saltatory conduction is when the action potential jumps from one node of Ranvier to the next, speeding up the impulse conduction.</p> Signup and view all the answers

<p>Thicker nerve fibres allow faster impulse conduction due to less resistance.</p> Signup and view all the answers