Lecture 5

Lecture 5 - NPB 101. Autumn 2008 The Nervous Systems: The...

Info iconThis preview shows pages 1–20. Sign up to view the full content.

View Full Document Right Arrow Icon
The Nervous Systems: The Peripheral Nervous System Afferent Division Special Senses Chapter 6 NPB 101. Autumn 2008
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Brain Central nervous system (CNS) Spinal cord Peripheral nervous system (PNS) Afferent division Efferent division Sensory stimuli Visceral stimuli Somatic nervous system Autonomic nervous system Motor neurons Sympathetic nervous system Parasympathetic nervous system Skeletal muscle Smooth muscle Cardiac muscle Glands Effector organs (made up of muscle and gland tissue) (Input to CNS from periphery) (Output from CNS to periphery) Fig. 5-1, p. 132 Major sub-divisions of the nervous system
Background image of page 2
Sensory afferents have two major sub-divisions: The visceral afferents The sensory afferents – special sensory and somatic sensory Special senses include vision, hearing, taste and smell
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Suspensory ligament Ciliary body Conjunctiva Iris Pupil Lens Cornea Aqueous humor Vitreous humor Blood vessels Optic disc Optic nerve Fovea Sclera Retina Choroid Extrinsic eye muscle Fig. 6-9, p. 192
Background image of page 4
Ciliary body Suspensory ligament Posterior cavity containing vitreous humor Ciliary muscle in ciliary body Posterior chamber Anterior chamber Anterior cavity Aqueous humor Iris Canal of Schlemm Fig. 6-10, p. 193
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Parasympathetic stimulation + Pupillary constriction Circular (constrictor) muscle runs circularly Radial muscle of iris Circular muscle of iris Pupil Iris Radial (dilator) muscle runs radially Pupillary dilation Sympathetic stimulation + Fig. 6-11, p. 193
Background image of page 6
Canal for tear drainage Pupil Iris Sclera Fig. 6-9, p. 192
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig. 6-12, p. 194
Background image of page 8
Fig. 6-13, p. 194
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig. 6-14, p. 194
Background image of page 10
Fig. 6-15, p. 195
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig. 6-16, p. 196
Background image of page 12
Fig. 6-17, p. 196
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig. 6-18, p. 196
Background image of page 14
Suspensory ligaments Ciliary muscle Lens Pupillary opening in front of lens Fig. 6-19a, p. 197
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig. 6-19b, p. 197
Background image of page 16
Sympathetic stimulation Iris Cornea Flattened weak lens Relaxed ciliary muscle Taut suspensory ligaments Fig. 6-19c, p. 197
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Sympathetic stimulation Rounded strong lens Contracted ciliary muscle Slackened suspensory ligaments Fig. 6-19d, p. 197
Background image of page 18
Near source No accommodations Accommodations
Background image of page 19

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 20
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/06/2010 for the course NPB idk taught by Professor Wingfield during the Spring '09 term at UC Davis.

Page1 / 40

Lecture 5 - NPB 101. Autumn 2008 The Nervous Systems: The...

This preview shows document pages 1 - 20. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online