1 / 19

1/13/14 Bellwork

1/13/14 Bellwork. Na+ (outside the neuron) and K+ (inside). Sodium/Potassium pump, because it pumps ions AGAINST the concentration gradient. What are the 2 ions important in nervous impulses? Where are they at rest? What part of the nervous impulse requires ATP? Why?

leanna
Download Presentation

1/13/14 Bellwork

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. 1/13/14 Bellwork • Na+ (outside the neuron) and K+ (inside) • Sodium/Potassium pump, because it pumps ions AGAINST the concentration gradient What are the 2 ions important in nervous impulses? Where are they at rest? What part of the nervous impulse requires ATP? Why? SWBAT name major parts of the brain and describe their function.

  2. Nervous System Anatomy of the Brain

  3. Four Major Regions Cerebrum (Cerebral hemispheres) Diencephalon Brain Stem Cerebellum

  4. Cerebrum Paired (left and right) superior parts of the brain Surface has gyri (ridges) and sulci (shallow grooves)

  5. Lobes of the Cerebrum Parietal lobe – somatic sensory area (impulses from sensory organs interpreted here)

  6. Lobes of the Cerebrum Occipital lobe – vision impulses Temporal lobe – auditory impulses, olfactory impulses

  7. Lobes of the Cerebrum Shade the lobes of your brain diagram 4 different colors as shown here. Label them. Frontal Lobe – primary motor area (conscious movement)

  8. Special Area of the Cerebrum Broca’s area – involved in ability to speak (usually in only 1 hemisphere) Corpus Callosum – connects the two hemispheres and allows them to communicate

  9. Diencephalon (interbrain) • Above brain stem, enclosed by cerebral hemispheres • Major structures of diencephalon: • Thalamus – sensory impulses pass through, can tell us good/bad

  10. Diencephalon (interbrain) • Major structures of diencephalon: • Hypothalamus – regulates body temp, H2O balance, metabolism • Part of limbic system (thirst, appetite, sex, pain, and pleasure centers) • Epithalamus – • Pineal body (endocrine system) • Choroid plexus (produces cerebrospinal fluid)

  11. Notecards • Diencephalon • Thalamus • Hypothalamus 1. Cut your notecard into 8 equal pieces 2. On one side write each of the parts of the Cerebrum and Diencephalon above 3. On the back write the function of that area • Cerebrum • Temporal lobe • Frontal lobe • Parietal lobe • Occipital lobe • Corpus callosum

  12. Bellwork Sulci Gyri Diencephalon Body temp, H2O balance, metabolism Temporal The grooves in the cerebrum are called _______, the ridges are called _______. The hypothalamus is part of the ___________ and helps control ___________________. The lobe that interprets impulses from hearing and smelling is _____________. SWBAT name major parts of the brain and describe their function.

  13. Brain Stem • About the size of a thumb (and ~3 in long) • Important structures of brain stem: • Midbrain - helps convey ascending & descending impulses • Pons – involved in controlling breathing

  14. Brain Stem • Reticular formation: associated with awake/sleep cycles (damage here can result in coma) • Important structures of brain stem: • Medulla oblongata: merges into spinal cord, contains control centers for heart rate, blood pressure, breathing, swallowing, vomiting

  15. Cerebellum Underneath occipital lobe, 2 hemispheres Controls balance, makes movements smooth and coordinated (damage here causes clumsy disorganized movements

  16. Protection of CNS • Meninges – 3 layers • Dura mater (tough mother): outer layer, attached to inside of skull • Arachnoid mater: like a spider web • Pia mater: (gentle mother): attached to brain and spinal cord

  17. Protection of CNS • Cerebrospinal fluid (CSF) • Formed by blood in choroid plexuses • Forms a cushion around brain and spinal cord • Similar to plasma in blood

  18. Notecards Cut your notecard into TEN pieces today! • Brain Stem • Midbrain • Pons • Medulla oblongata • Reticular formation • Cerebellum • Meninges • Dura mater • Arachnoid mater • Pia mater • Now make cards for the two missing words yesterday: cerebrum & diencephalon

More Related