Animal Body Systems - Nervous System Quiz

<p>It gets amplified into an action potential (B)</p> Signup and view all the answers

<p>They generate electrotonic potentials from neurotransmitter binding (B)</p> Signup and view all the answers

<p>They lack neurons but have basic cell physiology. (C)</p> Signup and view all the answers

<p>The clustering of neurons in a 'head' region. (A)</p> Signup and view all the answers

<p>Cnidarians (D)</p> Signup and view all the answers

<p>They contain ganglia that form a small brain. (B)</p> Signup and view all the answers

<p>Vertebrates (B)</p> Signup and view all the answers

<p>Ganglia connected by radial nerves without cephalization. (C)</p> Signup and view all the answers

<p>Arthropods have a more segmented nervous system. (B)</p> Signup and view all the answers

<p>Echinoderms show limited processing with decentralized ganglia. (A)</p> Signup and view all the answers

<p>It results in a depolarizing or excitatory PSP. (A)</p> Signup and view all the answers

<p>They are graded potentials rather than all-or-nothing responses. (C)</p> Signup and view all the answers

<p>K+ channels (B)</p> Signup and view all the answers

<p>It depends on the amount of neurotransmitter released. (A)</p> Signup and view all the answers

<p>It helps to compute inputs and contributes to learning and memory. (D)</p> Signup and view all the answers

<p>Through variations in receptor proteins and signaling pathways. (C)</p> Signup and view all the answers

<p>The collective input can create either EPSPs or IPSPs. (A)</p> Signup and view all the answers

<p>Cl- flowing inward. (D)</p> Signup and view all the answers

<p>The movement of charged particles called ions (C)</p> Signup and view all the answers

<p>Parasympathetic division (D)</p> Signup and view all the answers

<p>Norepinephrine (A)</p> Signup and view all the answers

<p>Muscarinic receptors (C)</p> Signup and view all the answers

<p>Increases heart rate and inhibits digestion (C)</p> Signup and view all the answers

<p>They have antagonistic effects on the same organs. (C)</p> Signup and view all the answers

<p>Parasympathetic division (B)</p> Signup and view all the answers

<p>Airways dilate, reducing resistance. (C)</p> Signup and view all the answers

<p>By integrating and coordinating organ systems. (A)</p> Signup and view all the answers

<p>It has two efferent neurons and peripheral ganglia. (D)</p> Signup and view all the answers

<p>Sympathetic Division (D)</p> Signup and view all the answers

<p>Body functions slow down and energy is conserved. (C)</p> Signup and view all the answers

<p>They maintain body homeostasis. (D)</p> Signup and view all the answers

<p>They show variations that accommodate different lifestyles and habitats. (B)</p> Signup and view all the answers

The process involving ion movement across the post-synaptic membrane triggered by neurotransmitter binding.

A local change in membrane potential in dendrites due to post-synaptic neurotransmitter activity.

The potential generated from the electrotonic potential at the dendrites flowing to the axon hillock.

Branch-like structures on neurons that receive signals from other neurons' neurotransmitters.

The part of the neuron where the post-synaptic potential triggers an action potential if sufficiently strong.

Excitatory postsynaptic potential; depolarizes the membrane by allowing Na+ to enter.

Inhibitory postsynaptic potential; hyperpolarizes the membrane by allowing K+ or Cl- to flow out.

Changes in membrane potential that vary in size, unlike all-or-nothing action potentials.

Process by which multiple PSPs combine at the axon hillock; includes both EPSPs and IPSPs.

The size of a PSP depends on the amount of neurotransmitter released into the synapse.

Postsynaptic neurons can receive up to 1,000 synaptic inputs from various sources.

Neurons can regulate responses by having varied inputs, neurotransmitters, receptors, and signaling pathways.

Lack neurons but have basic cell physiology.

Collections of neuronal cell bodies acting as integration sites.

Concentration of neurons in a 'head' region.

Neuronal organization in cnidarians without axons or dendrites.

Flatworms with a pair of ganglia forming a small brain.

Have a head region with a brain and connected ganglia.

Have neurons clustered into paired nervous systems.

Possess complex nervous systems with a brain and spinal cord.

Electrical activity occurring within living organisms due to ion movement.

Part of the nervous system responsible for voluntary control of body movements.

Part of the nervous system that controls involuntary actions in organs.

Part of the autonomic nervous system responsible for the 'fight or flight' response.

Part of the autonomic nervous system that promotes 'rest and digest' activities.

Nerve cells that carry signals away from the central nervous system to muscles or glands.

Nerve cells that carry sensory signals to the central nervous system.

Chemical messengers that transmit signals across a synapse from one neuron to another.

A neurotransmitter used in the autonomic nervous system for both divisions.

A neurotransmitter involved in the sympathetic division that impacts flight or fight response.

Proteins on cell surfaces that neurotransmitters bind to, eliciting a response.

Actions of the sympathetic and parasympathetic divisions that oppose each other.

Processes that maintain homeostasis by adjusting actions within the body.

The body's ability to maintain stable internal conditions despite external changes.

The coordination of signals and responses between different organ systems by the autonomic nervous system.