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SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY

SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

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Page 1: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY

Page 2: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Learning Objectives

• Identify structures of the spinal cord, both gross anatomical structures and cross sectional structures.

• Identify meninges and spaces around the spinal cord.

• Identify major peripheral nerves and nerve plexuses.

• Identify the accessory and internal structures of the eye, and explain their function.

• Describe the structures of the external and middle ear and explain how they function.

Page 3: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Gross anatomy of the spinal cord

Page 4: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Cross-sectional anatomy of the spinal cord

Page 5: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Cross-sectional anatomy of the spinal cord

Page 6: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Spinal Nerves: Roots

Figure 13.7a

Page 7: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The Meninges

Page 8: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Spinal Nerves

Figure 13.6

Page 9: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Nerve Plexuses

• All ventral rami except T2-T12 form interlacing nerve networks called plexuses

• Plexuses are found in the cervical, brachial, lumbar, and sacral regions

• Each resulting branch of a plexus contains fibers from several spinal nerves

Page 10: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Cervical Plexus

Figure 13.8

Page 11: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Brachial Plexus

Figure 13.9a

Page 12: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Figure 13.9c

Brachial Plexus: Distribution of Nerves

Page 13: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Figure 13.7b

Spinal Nerve Innervation: Back, Anterolateral Thorax, and Abdominal Wall

Page 14: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Lumbar Plexus

Figure 13.10

Page 15: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Sacral Plexus

Figure 13.11

Page 16: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Eternal Features and Accessory Structures of the Eye

Page 17: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The eye

• Conjunctiva covers most of eye

• Cornea is transparent anterior portion

• Three layers

• Outer fibrous tunic

• Sclera, cornea, limbus

• Middle vascular tunic

• Iris, ciliary body, choroid

• Inner nervous tunic

• Retina

Page 18: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The Sectional Anatomy of the Eye

Page 19: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Cow eye: External and internal anatomy

Page 20: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The Sectional Anatomy of the Eye

Page 21: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The Anatomy of the Ear

Page 22: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The Middle Ear

Page 23: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The Inner Ear

Page 24: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

The Organ Of Corti

Page 25: SPINAL CORD, SPINAL NERVES, EYE AND EAR ANATOMY. Learning Objectives Identify structures of the spinal cord, both gross anatomical structures and cross

Histology of the cochlea