Why Wrinkles on the Brain? - the wrinkles and grooves of the cerebrumwrinkles Fissures = deep groove Sulcus = shallow groove Gyrus = bump.

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Presentation transcript:

Why Wrinkles on the Brain? - the wrinkles and grooves of the cerebrumwrinkles Fissures = deep groove Sulcus = shallow groove Gyrus = bump

Dura mater is being peeled away in this photo.

THE BRAIN ANATOMICAL REGIONS o Cerebrum o Cerebellum o Brain Stem

CEREBELLUM Balance and coordination

CEREBRUM - wrinkly large part of the brain, largest area in humans, higher mental function

Brain Stem - regulates visceral functions (autonomic system)

Figure 13.4

1. Cerebral Hemispheres - left and right side separated by the Corpus Callosum - connects the two hemispheres

The Cerebral Hemispheres Figure 13.7b, c

Take the Left Brain – Right Brain Test

Corpus callosum

4. Fissures – separate lobes Longitudinal fissure - separate right and left sides

Transverse Fissure - separates cerebrum from cerebellum

Lateral Fissure separates the temporal lobe from the Frontal and Parietal lobes

Lobes of the Brain (general functions) 5. Frontal – reasoning, thinking, language 6. Parietal – touch, pain, relation of body parts (somatosensory) 7. Temporal Lobe – hearing 8. Occipital – vision

Figure 13.7a LOBES OF THE BRAIN (CEREBRUM) Sulcus = groove Gyrus = raised bump Fissure = deep groove

9. Cerebral Cortex - thin layer of gray matter that is the outermost portion of cerebrum (the part with all the wrinkles)

Functional and Structural Areas of the Cerebral Cortex Figure 13.11a

Fluid filled cavities, contain CSF 10.VENTRICLES OF THE BRAIN

11. Cerebrospinal Fluid (CSF) - fluid that protects and supports brain Figure 13.27b

FUNCTIONAL REGIONS A. MOTOR AREAS B. SENSORY AREAS C. ASSOCIATION

12. Motor Areas - controls voluntary movements - the right side of the brain generally controls the left side of the body -also has Broca's Area (speech)

13. Sensory Area - involved in feelings and sensations (visual, auditory, smell, touch, taste)

14. Association Areas - higher levels of thinking, interpreting and analyzing information

Figure 13.4 BRAIN STEM

Consists of three parts: MIDBRAIN PONS MEDULLA OBLONGATA

A. Hypothalamus - hormones, heart rate, blood pressure, body temp, hunger B. Thalamus - relay station 14. Diencephalon has 2 parts.....

4. Optic Tract / Chiasma - optic nerves cross over each other

5. Midbrain – visual reflexes, eye movements 6. Pons - relay sensory information 7. Medulla – heart, respiration, blood pressure Cerebellum - balance, coordination

Pituitary Gland The "master gland" of the endocrine system. It controls hormones.

Corpus callosum Thalamus Hypothalamus Pineal gland

Midbrain Medulla Oblongata Pons

Check out these brain images!brain images

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