lecture 1 - intro to physiology Flashcards
Do axons of the PNS tend to be myelinated or unmyelinated?
Myelinated
Does the PNS or CNS have a regenerative capacity?
PNS
Why does the brain use so much of the body’s energy/metabolism?
Electrical activity of neurons requires active transport to maintain cellular composition
What is the name for the free ribosomes found in neurons?
Nissl bodies
What are the 5 key divisions of the CNS?
- Cerebrum
- Diencephalon
- Brainstem
- Cerebellum
- Spinal cord
What are the 2 key parts of the diencephalon?
Thalamus, hypothalamus
What are the key functions of the hypothalamus?
Homeostatic regulation, ANS regulation, pituitary gland control
What is the key function of the thalamus?
To integrate/process sensory information and relay to/from the cortex
What are the 3 parts of the brain stem?
Midbrain, pons, medulla
What part of the brainstem is involved in alertness?
Reticular formation
What are the 12 cranial nerves?
Olfactory, Optic, Oculomotor, Trochlear, Trigeminal, Abducens, Facial, Vestibulocochlear, Glossopharyngeal, Vagus, Accessorry, Hypoglossal
What is the basic function of the cerebellum?
Integration of sensory information and correction for desired output.
What does lateralisation of function mean in terms of brain activity?
A function occurs only/mostly in one hempishere rather than symmetrically in both hemispheres
What is the function of Broca’s Area?
Speech motor production
What is the function of Wernicke’s Area?
Language comprehension and word selection/ordering
