Question 1

Non-neuron cells that outnumber neurons but are very important in neuron function are ____________ or glial.

Accepted Answer

neuroglial

Question 2

The light-sensitive layer inside the vertebrate eye is the ____________.

Accepted Answer

retina

Question 3

Describe how the central nervous system and the peripheral nervous system interact to provide a vertebrate organism with complete information about the internal and external environments.

Accepted Answer

The central nervous system (CNS) and the peripheral nervous system (PNS) work together to provide a vertebrate organism with complete information about its internal and external environments. The CNS, which includes the brain and spinal cord, processes and integrates information received from the PNS, which consists of nerves and ganglia outside of the brain and spinal cord.

The PNS gathers sensory information from the external environment through sensory receptors such as the eyes, ears, skin, and taste buds. It also collects information about the internal environment, including the state of the organs and tissues. This sensory information is then transmitted to the CNS via sensory neurons.

Once the sensory information reaches the CNS, it is processed and integrated to form a coherent understanding of the organism's surroundings. The CNS then generates appropriate responses and sends signals back to the PNS through motor neurons. These signals result in actions such as muscle movements, glandular secretions, and changes in organ function.

The interaction between the CNS and PNS allows for rapid and coordinated responses to changes in the environment, ensuring the organism's survival and well-being. This complex communication system enables vertebrate organisms to perceive and respond to a wide range of stimuli, from the touch of a feather to the detection of potential threats, ultimately allowing for adaptation and successful navigation of their surroundings.

Question 4

Synapses where ionic currents flow directly across a narrow gap junction are called ______ ______.

Accepted Answer

The answer of Synapses where ionic currents flow directly across...

Question 5

Insects possess chemoreceptors that are located in sensory hairs called __________________.

Accepted Answer

The answer of Insects possess chemoreceptors that are located in...

Question 6

The most posterior region of the brain,really an extension of the spinal cord,is the _______ ________.

Accepted Answer

The answer of The most posterior region of the brain,really...

Question 7

The sense of smell is

Accepted Answer

A) coded by genes with each of 500-1000 genes coding for a separate odor receptor. 
B) poor in humans when compared to other mammals such as dogs. 
C) detected with olfactory endings in a special epithelium covered by a thin film of mucus deep in the nasal cavity. 
D) analyzed by olfactory cortex that is connected to centers of emotions. 
E) All of the choices are correct. 
A) coded by genes with each of 500-1000 genes coding for a separate odor receptor. 
B) poor in humans when compared to other mammals such as dogs. 
C) detected with olfactory endings in a special epithelium covered by a thin film of mucus deep in the nasal cavity. 
D) analyzed by olfactory cortex that is connected to centers of emotions. 
E) All of the choices are correct.

Question 8

The brain of early fishes consisted of three principal regions called

Accepted Answer

A) pons,cerebellum,cerebrum. 
B) prosencephalon,mesencephalon,and rhombencephalon. 
C) protoganglia,mesoganglia,and metaganglia. 
D) ichthyospinal region,ichthyocerebrum,and ichthyocerebellum. 
E) premedulla,medulla oblongata,and postmedulla. 
A) pons,cerebellum,cerebrum. 
B) prosencephalon,mesencephalon,and rhombencephalon. 
C) protoganglia,mesoganglia,and metaganglia. 
D) ichthyospinal region,ichthyocerebrum,and ichthyocerebellum. 
E) premedulla,medulla oblongata,and postmedulla.

Question 9

The myelin sheath that insulates the axon is formed by special glial cells called ______ ______.

Accepted Answer

The answer of The myelin sheath that insulates the axon...

Question 10

Pacinian corpuscles adjusting to new shapes,no longer responding to constant pressure,is a condition called

Accepted Answer

A) adaptation. 
B) fatigue. 
C) timbre. 
D) inhibition. 
E) redundancy. 
A) adaptation. 
B) fatigue. 
C) timbre. 
D) inhibition. 
E) redundancy.

Question 11

Which statement is NOT true about the action potential of the neuron?

Accepted Answer

A) Repolarization occurs as movement of potassium ions occurs across the cell membrane 
B) The action potential moves more slowly along a myelinated neuron than along one with no myelin sheath 
C) The action potential travels the length of the axon in a self-propagating fashion 
D) Saltatory conduction occurs from one node of Ranvier to another along a myelinated neuron 
E) Large fibers in neurons of some invertebrates carry very rapid nerve action potentials 
A) Repolarization occurs as movement of potassium ions occurs across the cell membrane 
B) The action potential moves more slowly along a myelinated neuron than along one with no myelin sheath 
C) The action potential travels the length of the axon in a self-propagating fashion 
D) Saltatory conduction occurs from one node of Ranvier to another along a myelinated neuron 
E) Large fibers in neurons of some invertebrates carry very rapid nerve action potentials

Question 12

The event at an electrical synapse

Accepted Answer

A) always involves acetylcholine. 
B) always involves some neurotransmitter that stimulates the next neuron. 
C) is a point at which ionic currents flow directly across a narrow gap junction. 
D) involves either an inhibitory or stimulating neurotransmitter chemical. 
E) None of the choices is correct. 
A) always involves acetylcholine. 
B) always involves some neurotransmitter that stimulates the next neuron. 
C) is a point at which ionic currents flow directly across a narrow gap junction. 
D) involves either an inhibitory or stimulating neurotransmitter chemical. 
E) None of the choices is correct.

Question 13

Discuss what is meant by "action potential" - be sure to discuss the properties of self-propagation,depolarization,and repolarization.

Accepted Answer

An action potential is a brief electrica

Question 14

Discuss the difference between electrical synapses and chemical synapses.

Accepted Answer

Electrical synapses and chemical synapse

Question 15

The part of the brain responsible for deep seated drives such as sex,hunger,thirst,anger and pleasure is the

Accepted Answer

A) medulla oblongata. 
B) reticular formation. 
C) parasympathetic system. 
D) limbic system. 
E) None of the choices is correct since these all originate in endocrine glands 
A) medulla oblongata. 
B) reticular formation. 
C) parasympathetic system. 
D) limbic system. 
E) None of the choices is correct since these all originate in endocrine glands

Question 16

The subdivision of the nervous system that consists of the brain and spinal cord is called the ______ ______ ______.

Accepted Answer

central ne

Question 17

An animal with a simple net-like nervous system is the

Accepted Answer

A) earthworm. 
B) dog. 
C) cnidarian hydra. 
D) molluscan octopus. 
E) flatworm. 
A) earthworm. 
B) dog. 
C) cnidarian hydra. 
D) molluscan octopus. 
E) flatworm.

Question 18

Discuss the function(s)of the vomeronasal organ.

Accepted Answer

The vomeronasal organ, also known as Jac

Question 19

The leaping of the action potential from node to node in vertebrate high-speed neurons is known as ____________ conduction.

Accepted Answer

The answer of The leaping of the action potential from...

Question 20

The autonomic nervous system consists of two subdivisions,the _________ and the parasympathetic.

Accepted Answer

The answer of The autonomic nervous system consists of two...

Exam 33: Nervous Coordination: Nervous System and Sense Organs

Non-neuron cells that outnumber neurons but are very important in neuron function are ____________ or glial.

The light-sensitive layer inside the vertebrate eye is the ____________.

Describe how the central nervous system and the peripheral nervous system interact to provide a vertebrate organism with complete information about the internal and external environments.

Synapses where ionic currents flow directly across a narrow gap junction are called ______ ______.

Insects possess chemoreceptors that are located in sensory hairs called __________________.

The most posterior region of the brain,really an extension of the spinal cord,is the _______ ________.

The sense of smell is

The brain of early fishes consisted of three principal regions called

The myelin sheath that insulates the axon is formed by special glial cells called ______ ______.

Pacinian corpuscles adjusting to new shapes,no longer responding to constant pressure,is a condition called

Which statement is NOT true about the action potential of the neuron?

The event at an electrical synapse

Discuss what is meant by "action potential" - be sure to discuss the properties of self-propagation,depolarization,and repolarization.

Discuss the difference between electrical synapses and chemical synapses.

The part of the brain responsible for deep seated drives such as sex,hunger,thirst,anger and pleasure is the

The subdivision of the nervous system that consists of the brain and spinal cord is called the ______ ______ ______.

An animal with a simple net-like nervous system is the

Discuss the function(s)of the vomeronasal organ.

The leaping of the action potential from node to node in vertebrate high-speed neurons is known as ____________ conduction.

The autonomic nervous system consists of two subdivisions,the _________ and the parasympathetic.

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Hexapods

Chaetognaths, echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, Protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distribution

Animal Ecology

Filters

Synapses where ionic currents flow directly across a narrow gap junction are called .

The most posterior region of the brain,really an extension of the spinal cord,is the _ __.

The myelin sheath that insulates the axon is formed by special glial cells called .

The subdivision of the nervous system that consists of the brain and spinal cord is called the __.