1 / 23

The Brain

The Brain. Ch. 7c. The Brain. Functional Anatomy Cerebral Hemispheres Diencephalon Brain Stem Cerebellum. Cerebral Hemispheres. Anatomy Most superior part of the brain Fissures separate parts of the Cerebrum 2 hemispheres (left and right) 4 lobes each Frontal Lobe Parietal Lobe

topaz
Download Presentation

The Brain

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Brain Ch. 7c

  2. The Brain • Functional Anatomy • Cerebral Hemispheres • Diencephalon • Brain Stem • Cerebellum

  3. Cerebral Hemispheres • Anatomy • Most superior part of the brain • Fissures separate parts of the Cerebrum • 2 hemispheres (left and right) • 4 lobes each • Frontal Lobe • Parietal Lobe • Occipital Lobe • Temporal Lobe

  4. Cerebral Hemispheres • Physiology • Frontal Lobe • Language comprehension • Voluntary movement • Parietal Lobe • Somatic Sensory Area • Occipital Lobe • Visual • Temporal Lobe • Auditory (hearing) • Olfactory (Smell)

  5. Cerebral Hemispheres • Broca’s Area • Junction of temporal, parietal & occipital lobes • Speech area

  6. Cerebral Hemispheres • Sensory and Motor functions • Perception and control are crossed • Left Brain senses and controls right side of body • Right Brain senses and controls left side of body

  7. Diencephalon • Diencephalon (interbrain) • Thalamus • Hypothalamus • Regulates body temperature, water balance, metabolism • Regulates emotions such as appetite, sex, pain, pleasure • Pituitary Gland

  8. Brain Stem • Midbrain • Sends messages into and out of the brain • Vision and Hearing reflexes • Pons • Breathing Control • Medulla oblongata • Control: heart rate, blood pressure, breathing, swallowing, vomiting, etc. • Reticular formation • Controls Asleep/Awake

  9. Cerebellum • Inferior and Dorsal to the Occipital Lobe • Functions: • Timing for Skeletal muscle activity • Balance • Equilibrium • Monitors body position

  10. Protection of Central Nervous System • Meninges • Cerebrospinal Fluid • Blood-Brain Barrier

  11. Meninges • 3 layers of connective tissue protecting CNS • Dura Mater • Means “tough or hard mother” • Outer most layer - thick and tough • Arachnoid Mater • Means “spider mother” • Middle layer - web-like • Pia Mater • Means “gentle mother” • Innermost layer

  12. Cerebrospinal fluid • Watery “broth”, like blood plasma • Forms watery cushion around brain and spinal cord • Protection from injury and trauma • Is made from filtered blood • Circulates and renews at a constant rate

  13. Blood-Brain Barrier • Least permeable capillaries feed nervous system • Prevents serious chemical imbalances • Prevents disease from passing into CNS • Some substances still easily pass into brain • Alcohol • Nicotine • Anesthetics

  14. Brain Dysfunctions • Concussion • Slight injury: dizzy, briefly lose consciousness • Contusion • Brain tissue destruction: coma • Progression of brain injury/healing • Cerebral Edema • Brain Swelling • Cerebrovascular Accident • Blood circulation to brain is stopped: clot, ruptured blood vessel. Brain tissue dies

More Related