Week 8 Chapter 12 Part 1 HW

Pain receptors in the skin send signals to the CNS for processing. These pain receptors are an example of ____________ neurons.

Afferent

Which neuroglial cell produces cerebrospinal fluid?

Ependymal Cells

The most common type of neuron contains many dendrites and a single axon. Structurally, this is classified as a(n) ______________ neuron.

Multipolar

Which of the following is in the CNS?

Neurons Oligodendrocytes

What type of cells produce the myelin sheath in the central nervous system (CNS)?

Oligodendrocytes

The ___________ nervous system transmits information from receptors to the CNS, while the ___________ nervous system transmits information from the CNS to the rest of the body.

Sensory; Motor

Information about proprioception is carried through...

Somatic sensory neurons

Place structures in order that CSF would flow through them. Third Ventricle Lateral Ventricles Interventricular Foramen Fourth Ventricle Cerebral Aqueduct Central Canal

1 Lateral Ventricles 2 Interventricular Foramen 3 Third Ventricle 4 Cerebral Aqueduct 5 Fourth Ventricle 6 Central Canal

Pair the PNS structure with its definition 1. Nerve 2. Ganglion Collections of axons in PNS Collection of somas in PNS

1. Collections of axons in PNS 2. Collection of somas in PNS

The structural classification of neurons is based on the number of processes that extend from the neuron cell body. Match these definitions to the correct term. Unipolar Neuron Bipolar Neuron Multipolar Neuron 1. Many dendrites and a single axon 2. One dendrite and one axon 3. One process with two branches; one extending to the CNS, one extending to the periphery

1. Multipolar Neuron 2. Bipolar Neuron 3. Unipolar Neuron

What is the structural neuron classification for the sensory neurons that have the receptors for smell?

Bipolar

Fill in the blanks with the terms provided. The nervous system serves as the body's primary _______________ and control system. It provides a rapid means of _______________ and regulating body functions through electrical activity transmitted along specialized nervous system cells called _______________ to accomplish the following: • Collect information. Specialized nervous system structures called _______________ monitor changes in both the internal and external environment called _______________. • Process and evaluate information. After processing _______________ input, the brain and spinal cord determine what response, if any, is required. • Initiate response to information. The brain and spinal cord initiate a response as _______________ output via nerves to _______________. These structures include all three types of muscle tissue and glands.

Communication Integrating Neurons Receptors Stimuli Sensory Motor Effectors

Match the subdivision of the nervous system with its components. Consists of the brain and spinal cord Includes cranial nerves, spinal nerves, and ganglia

Consists of the brain and spinal cord - Central Nervous System Includes cranial nerves, spinal nerves, and ganglia - Peripheral Nervous System

Neurons that carry signals from the CNS to skeletal muscle for contraction would be classified as _____________ neurons.

Efferent

True or False: Ganglia are clusters of neuron cell bodies located within the CNS.

False

True or False: Schwann cells produce myelin in the CNS and are also called neurolemmocytes.

False

True or False: The endoneurium wraps around groups of fascicles to form a nerve.

False

Which of the following is in the PNS?

Ganglia Neurons Myelin

Fill in the blanks with the terms provided. Not all terms will be used. The peripheral nervous system is further subdivided into an afferent (sensory) division and an efferent (________) division. The afferent or sensory division transmits impulses __________. The efferent or motor division transmits impulses __________. The motor division is separated further into a somatic motor division and a(n) __________ motor division. Autonomic refers to the controls we are not aware of, like __________ muscle, cardiac muscles, and glands.

Motor From peripheral organs to the CNS From the CNS out to the peripheral organs Autonomic Smooth

Classify the given items with the appropriate group. Unipolar Neuron Bipolar Neuron Multipolar Neuron Anaxonic Neuron - Have central and peripheral processes. - Most common type of neuron. Have many dendrites and a single axon. - No axons are present. Only produce local potentials. - Have one axon and one dendrite.

Multipolar Neuron - Most common type of neuron. Have many dendrites and a single axon. Bipolar Neuron - Have one axon and one dendrite. Unipolar Neuron - Have central and peripheral processes. Anaxonic Neuron - No axons are present. Only produce local potentials.

Place the following labels in the proper position to designate the appropriate glial cells. Oligodendrocytes Astrocytes Ependymal Cells Microglia Neurolemmocytes Satellite Cells - Form the myelin sheath in the PNS. - PNS cells that surround and insulate the somas. - Involved with neurogenesis, scar formation, and blood-brain barrier maintenance. - Cells of the lymphatic system. - Form the myelin sheath in the CNS. - Most abundant CNS glial cell. - Function in the production and circulation of cerebrospinal fluid. - Macrophages of the CNS.

Oligodendrocytes - Form the myelin sheath in the CNS. Ependymal Cells - Function in the production and circulation of cerebrospinal fluid. Microglia - Cells of the lymphatic system. - Macrophages of the CNS. Astrocytes - Most abundant CNS glial cell. - Involved with neurogenesis, scar formation, and blood-brain barrier maintenance. Neurolemmocytes - Form the myelin sheath in the PNS. Satellite Cells - PNS cells that surround and insulate the somas.

Place these neurons into the proper classification group. Structural Classification Functional Classification - Efferent Neuron. - Association Neuron. - Multipolar Neuron. - Interneuron Neuron. - Afferent Neuron. - Bipolar Neuron. - Sensory Neuron. - Motor Neuron. - Unipolar Neuron.

Structural Classification - Multipolar Neuron. - Bipolar Neuron. - Unipolar Neuron. Functional Classification - Sensory Neuron. - Motor Neuron. - Interneuron Neuron. - Afferent Neuron. - Efferent Neuron. - Association Neuron.

Which is NOT a special sense?

Touch

True or False: All interneurons are located within the central nervous system.

True