click below
click below
Normal Size Small Size show me how
The Nervous System
Chapter 9 The Brain and Cranial Nerves LPN Goodcare
| Question | Answer |
|---|---|
| Divisions of the Brain | Cerebrum Diencephalon Brain Stem Cerebellum |
| Protective Structures of the Brain and Spinal Cord | Meninges Pia Mater Arachnoid Layer Dura Mater Cerebrospinal Fluid |
| Structure of the Cerebrum | Convolutions (gyri) are ridges of the brain. Sulcus (plural - sulci) are shallow grooves of the brain. Fissures are the deep grooves of the brain. |
| Divisions of the Cerebrum | Frontal Parietal Lobe Temporal Lobe Occipital Lobe |
| The Brain Stem | The Midbrain The Pons The Medulla Oblongata 1) Respiratory Center 2) Cardiac Center 3) Vasomotor Center |
| The Limbic System | Cingulate Gyrus Hippocampus Amygdala Parts of the Hypothalamus and nearby nuclei Basal Nuclei (or Basal Ganglia) Reticular Formation |
| Cranial Nerves & Their Functions | |
| 1) Olfactory - | Sense of smell |
| 2) Optic - | Sense of sight |
| 3)Occulmotor - | Eye operation |
| 4)Trochlear - | Eye movement |
| 5) Trigeminal - Mixed facial nerves | * Ophthalmic - Around eye * Maxillary - Around upper jaw * Mandibular - Around lower jaw |
| 6) Abducens - | Eye muscles |
| 7) Facial - | Expression, also tongue and mouth |
| 8) Vestibulococlear | *Vestibular branch - Balance & Equilibrium * Cochlear - Hearing |
| 9) Glossopharyngeal - | Tongue, pharynx and carotid region |
| 10) Vagus | - Speech, swallowing, heart, smooth muscles and glands of thorax and abdomen |
| 11) Accessory | *Cranial - muscles of soft palate, pharynx and larynx *Spinal - Muscles of neck and back |
| 12) Hypoglossal - | Muscles of tongue |
| Signals Carried by the Cranial Nerves | Special Sensory Impulses General Sensory Impulses Somatic Motor Impulses Visceral Motor Impulses |
| Types of Brain Studies | Computed Tomography (CT) Scan Magnetic Resonance Imaging (MRI) Positron Emission Tomography (PET) Scan |