Study Guides (400,000)
CA (160,000)
UTSC (10,000)
Psychology (2,000)
PSYA01H3 (200)

Textbook and Lecture Notes


Department
Psychology
Course Code
PSYA01H3
Professor
Steve Joordens

This preview shows pages 1-3. to view the full 15 pages of the document.
Chapter 4
The Brain
-----------------------------------------------------
The Brain
- CNS:
- Brain and spinal cord
- Spinal cord:
- Long thin collection of nerve cells attached to the base of the brain and running the
length of the spinal column
- Spine has 7C 12T 5L [Cervical, Thoracic, Lumbar]
- Peripheral Nervous System:
- Everything but the brain and spinal cord
- Cranial and spinal nerves
- Cranial Nerve:
- Bundle of nerve fibres attached to the base of the brain
- Conveys sensory information from the face and head and carries messages to
muscles and glands
- Spinal Nerve:
- Bundle of nerve fibres attached to the spinal cord
- COnveys snesory information from the body and carries messages back to the
muscles and glands
www.notesolution.com

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

- Brain stem:
- Stem of the brain [Medulla, pons, mid-brain]
- Cerebral Hemisphere:
- Largest part of brain
- Cerebral cortex covered and contains parts of brain that evolved most recently
- Cerebellum:
- A pair of hemispheres resembling the cerebral hemispheres but much smaller and
lying beneath and in the back of them
- Controls posture, and movement
. Especially fast ones
- Vertebra:
- One of the bones that encase the spinal cord and constitute the vertebral column
- Meninges:
- Three layered set of membranes enclosing the brain and spinal cord
- Cerebrospinal Fluid:
- Liquid which brain and spinal cord float
- Blood-brain barrier:
www.notesolution.com

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

- Barrier between the blood and brain produced by the cells in the walls of the brain's
capillaries
- Prevents substances from passing from blood into brain
- Cerebral cortex:
- Outer layer of cerebral hemispheres of the brain
- Approximately 3mm thick
- Gray matter:
- Portions of central nervous system
- Abudnant in cell bodies of neurons rather than axons [Deeper part of cerebral
cortex]
- White matter:
- Portions of the CNS that have lots of axons. Colour derives from the myelin sheaths
of axons
-----------------------------------------------------
The Nervous System
- Neuron:
- Nerve cell, consisting of cell body
- Dendrites, and axons
- Axons are the stems going out branching into dendrite
- Glial Cell:
www.notesolution.com
You're Reading a Preview

Unlock to view full version