Gallbladder Double-Diverticular: A Case Report المرارة مزدوجة التج: تقرير حالة
Nervous System Structure and Function.ppt
1. Anatomy and Physiology I
The Nervous System
Basic Structure and Function
Instructor: Mary Holman
2. Three Basic Functions of the
Nervous System
Sensory Function
Sensory or afferent neurons
Integrative Function
Interneurons
Motor Function
Motor or efferent neurons
4. Divisions of the Nervous System
Central Nervous System CNS
Brain
Spinal Cord
Peripheral Nervous System PNS
Cranial Nerves
Spinal Nerves
Ganglia
Sensory Receptors
5. Divisions of the PNS
Somatic Nervous System
Sensory neurons
Motor neurons to skeletal muscle only
Autonomic Nervous System
Autonomic sensory neurons - visceral
Motor neuron impulses to smooth & cardiac muscle,
glands and adipose tissue
Sympathetic vs. Parasympathetic Motor Divisions
Enteric Nervous System
Enteric complexes of the gut
7. Cells of Neural Tissue
• Neurons
The electrically excitable nerve cells
responsible for the functions of the
nervous system
• Neuroglia (glia, neuroglia, glial)
Support, nourish, & protect neurons
16. Neuroglia of the CNS
• Astrocytes
major support cells
provide nutrients, monitor metabolism etc
• Oligodendrocytes
myelinate axons in CNS
• Microglia
phagocytic
• Ependymal
line ventricles & central canal
produce cerebrospinal fluid (CSF)