Session 12 - Intro To Nervous System Flashcards
List the 3 messenger system of the body
- Immune system
- Endocrine system
- Nervous system
What constitutes the central nervous system?
- Brain
- Spinal cord
What are the 2 main components of the nervous system?
- Central nervous system
- Peripheral nervous system
Bundles of neuron processes are known as what in the CNS?
Tracts
Bundles of neuron processes are known as what in the PNS?
Nerves
What are nuclei?
Congregations of cell bodies located in the white matter of the brain
What are ganglia?
Congregations of cell bodies in the PNS
Which cells constitute the myelin sheaths in the PNS?
Schwann cells
Which cells constitute the blood-brain barrier?
Astrocytes
Which cells are part of neuroglia? List 5.
- Oligodendrocytes
- Microglia
- Astrocytes
- Ependymal
- Schwann cells
List the 12 cranial nerves.
- Olfactory nerve
- Optic nerve
- Oculomotor nerve
- Trochlear nerve
- Trigeminal nerve
- Abducens nerve
- Facial nerve
- Vestibulococchlear nerve
- Glossopharyngeal nerve
- Vagus nerve
- Accessory nerve
- Hypoglossal nerve
What is the function of the Hypoglossal nerve?
It controls the muscles of the tongue
What is the function of the Accessory nerve?
It controls the sternocleidomastoid and trapezius muscle
What is the function of the Vagus nerve?
- Controls muscles in the in the pharynx, larynx, trachea, bronchial tree, heart and GI tract up to the left colic flexure
- Provides sensory innervation for viscera up to the left colic flexure
What is the function of the Glossopharyngeal nerve?
- Provides motor innervation for the stylopharyngeus muscle and parotid gland
- Provides sensory innervation for the pharynx, middle ear cavity and taste in the posterior 1/3 of the tongue,
What is the function of the Vestibulococchlear nerve?
Provides sensory innervation for hearing and maintaining balance
What is the function of the Olfactory nerve?
Provides sensory innervation for smell
What is the function of the Optic nerve?
Provides sensory innervation for vision
What is the function of the Oculomotor nerve?
Provides motor innervation for the muscles of the eye
What is the function of the Trochlear nerve?
Provides motor innervation for the muscles of the eye
What is the function of the trigeminal nerve?
- Provides sensory innervation for the face, sinuses and teeth
- Provides motor innervation for the mastication muscles
What is the function of the facial nerve?
- Provides motor innervation for salivary glands, lacrimal gland and muscles used for facial expressions
- Provides sensory innervation for taste in the anterior 2/3 of the tongue
What is the vertebral location of the brachial plexus?
C5-T1
What is the cortex of the brain?
A superficial layer of cell bodies in the cerebellum and cerebrum
Name the lobes of each hemisphere of the cerebrum.
Frontal
Parietal
Occipital
Temporal
Which lobe of the cerebrum has the functional area of general sensory?
Parietal lobe
Which lobe of the cerebrum has the functional area of hearing?
Temporal lobe
Which lobe of the cerebrum has the functional area of vision?
Occipital lobe
Which lobe of the cerebrum has the functional area for foresight, insight and emotion?
Anterior part of the frontal lobe
Which lobe of the cerebrum has the functional area for voluntary motor?
The posterior part of the frontal lobe
Which lobe of the cerebrum has the functional area for motor speech?
The inferior part of the frontal lobe
What is the function of basal nuclei?
They control habitual movement
What connects the 2 hemispheres of the cerebellum?
Vermis
List the lobes of each hemisphere of the cerebellum.
Anterior lobe
Posterior lobe
Flocculo-nodular lobe
Which lobes of the cerebellum have the function of coordination of movements?
Anterior and posterior lobes
Which lobe of the cerebellum has the function of maintaining balance?
Flocculo-nodular lobe
Which parts make up the brain stem?
Midbrain
Pons
Medulla oblongata