7.3 Preview: Sensory Neurons 

The branching network of nerves that are responsible for sending incoming and outgoing messages to and from the CNS. Take a look at the type of receptors that are present in this system by completing the warm-up to the right. 

• Recommended to complete or preview lesson first. 

• Each example should include three different components (see instructions at the top. *make a chart in your mod. guide. 

7.3 Lesson - Part 1:

• Please record all notes in your notebook. 

Essential Vocab: neural plate, neural folds, neural groove, neural tube, neural crest, primary brain vesicle, proencephalon, forebrain, mesencephalon, midbrain, rhombencephalon, hindbrain, secondary brain vesicle, telecephalon diencephalon, metaincephalon, cerebellum, cerebrum, brain stem, ventricles, septum pellucidum, forth ventricles, median aperture, lateral apertures, gyri, sulci, fissures, frontal lobe, temporal lobe, cerebral cortex, Brodmass areas, pyramidal cells, somatotopy, motor homunculi, premotor cortex, frontal eye field, visual association area, auditory association area, olfactory cortex, gustatory cortex, multimodal association area, anterior association area, posterior associated area, limbic association area, lateralization, cerebral dominance, cerebral white matter, basal ganglia, association fibers, diencephalon, thalamus, interthalamic, adhesion, hypothalamus, infundibulum, pituitary gland, epithalamiums, midbrain, brain stem, corpora quadrigemia, superiorcolliculi, substantia nigra, pons, medulla oblongata, medulla, cochlear nuclei, nucleus gracilis, limbic system, reticular function, consciousness, fainting, syncope, narcolepsy, insomnia, memory consolidation, long-term action potential, meninges, dura mater, arachnoid matter, pia mater, cerebral spinal fluid, choroid plexuses, blood brain barrier, spinal cord, basal plate, filum terminale, lateral horns, ventral roots, ganglion, spinal ganglion

Module Learning Targets: 

Module Objectives: 

1. Define peripheral nervous system and list its components.

PART 1: SENSORY RECEPTORS AND SENSATION

Sensory Receptors

   2.  Classify general sensory receptors by structure, stimulus detected, and body location.

Sensory Integration: From Sensation to Perception

   3.  Outline the events that lead to sensation and perception.

   4.  Describe receptor and generator potentials and sensory adaptation.

   5.  Describe the main aspects of sensory perception.

PART 2: TRANSMISSION LINES: NERVES AND THEIR STRUCTURE AND REPAIR

Nerves and Associated Ganglia

   6.  Define ganglion and indicate the general body location of ganglia.

   7.  Describe the general structure of a nerve.

   8.  Follow the process of nerve regeneration.

Cranial Nerves

   9.  Name the 12 pairs of cranial nerves; indicate the body region and structures innervated by each.

Spinal Nerves

1. Describe the formation of a spinal nerve and the general distribution of its rami.

2. Define plexus. Name the major plexuses and describe the distribution and function of the peripheral nerves arising from each plexus.

PART 3: MOTOR ENDINGS AND MOTOR ACTIVITY

Peripheral Motor Endings

1. Compare and contrast the motor endings of somatic and autonomic nerve fibers.

Motor Integration: From Intention to Effect

1. Outline the three levels of the motor hierarchy.

2. Compare the roles of the cerebellum and basal nuclei in controlling motor activity.

PART 4: REFLEX ACTIVITY

The Reflex Arc

1. Name the components of a reflex arc and distinguish between autonomic and somatic reflexes.

Spinial Reflexes

1. Compare and contrast stretch, flexor, crossed-extensor, and Golgi tendon reflexes.

Developmental Aspects of the Peripheral Nervous System

1. Describe the developmental relationship between the segmented arrangement of peripheral nerves, skeletal muscles, and skin dermatomes.

2. List the changes that occur in the peripheral nervous system with aging.