3.01 Remember the structures of the nervous system

1. 3.01 Remember the structures of the nervous system

2. Essential Question • What are the structures of the nervous system? 3.01 Remember the structures of the nervous system

3. Introduction: Structures of the nervous system 3.01 Remember the structures of the nervous system

4. Cellular structures of the nervous system Neuron- a nerve cell • Extensions of the neuron • Dendrites – can have many • Axon – only have one 3.01 Remember the structures of the nervous system

5. Cellular structures of the nervous system Neuron- a nerve cell • Myelin sheath - a special covering of the axon • Synapse – the space between neurons Neuron VIDEO (draw with him) 3.01 Remember the structures of the nervous system

6. Structures of the nervous system Central nervous system • Brain • Spinal cord 3.01 Remember the structures of the nervous system

7. Structures of the nervous system • Peripheral nervous system consists of • Cranial nerves • Spinal nerves • Peripheral nervous system has two divisions: • Autonomic nervous system • Somatic nervous system 3.01 Remember the structures of the nervous system

8. Structures of the central nervous system: BRAIN 3.01 Remember the structures of the nervous system

9. Structures of the central nervous system: BRAIN • Cerebrum • Divided into two hemispheres (right and left) by longitudinal fissure • Frontal lobe • Parietal lobe • Temporal lobe • Occipital lobe 3.01 Remember the structures of the nervous system

10. Structures of the central nervous system: BRAIN • Diencephalon • Located between the cerebrum and the brainstem • Structures • Thalamus • Hypothalamus • Pineal body • Pituitary gland

11. Structures of the central nervous system: BRAIN • Diencephalon • Thalamus • Hypothalamus – lies below the thalamus; part of the limbic system • Pineal body – endocrine system gland • Pituitary gland – endocrine system gland 3.01 Remember the structures of the nervous system

12. Structures of the central nervous system: BRAIN • Limbic system • Collection of structures in the center of the brain • Encircles the top of the brain stem. • Composed of the amygdala, hippocampus, cingulated gyrus, and other intricate structures. (Informational only for reference.) 3.01 Remember the structures of the nervous system

13. Structures of the central nervous system: BRAIN • Cerebellum • Located below the cerebrum Cerebellum 3.01 Remember the structures of the nervous system

14. Structures of the central nervous system: BRAIN Brainstem • Midbrain • Pons • Medulla oblongata 3.01 Remember the structures of the nervous system

15. Structures of the central nervous system: BRAIN https://www.youtube.com/watch?v=wt3qfrlsV_g&t=1s 3.01 Remember the structures of the nervous system

16. Rap: https://www.youtube.com/watch?v=kp4gNgtkQ4I Ice Ice baby: https://www.youtube.com/watch?v=QsftxduyET8 Gagnum Style: https://www.youtube.com/watch?v=6PvS8cWsKyo Structures of the central nervous system: 3.01 Remember the structures of the nervous system

17. Meninges – membrane covering brain and spinal cord. Dura mater Outermost layer. Lines inside of skull. Arachnoid Middle layer Cob-web like fluid filled space Pia mater Innermost layer Structures of the central nervous system: BRAIN 3.01 Remember the structures of the nervous system

18. Structures of the central nervous system: BRAIN • Ventricles - lined cavities deep within the brain • Filled with cerebrospinal fluid (CSF) • Choroid plexus – rich network of blood vessels in each of the four ventricles • CEREBROSPINAL FLUID • Forms inside ventricles of the brain • Serves as a liquid shock absorber protecting the brain and spinal cord 3.01 Remember the structures of the nervous system

19. Made of a bundle of nerve fibers Surrounded by the vertebrae, meninges, and cerebrospinal fluid Structures of the central nervous system: Spinal Cord 3.01 Remember the structures of the nervous system

20. Made of a bundle of nerve fibers Surrounded by the vertebrae, meninges, and cerebrospinal fluid Structures of the central nervous system: Spinal Cord 3.01 Remember the structures of the nervous system

21. Peripheral nervous system has: 12 cranial nerve pairs 31 spinal nerve pairs Peripheral nervous system is divided into: Somatic Nervous System Autonomic Nervous System Structures of the nervous system 3.01 Remember the structures of the nervous system

22. Structures of the peripheral nervous system Cranial nerves –originate in brain • I. Olfactory • II. Optic • III. Oculomotor • IV. Trochlear • V. Trigeminal • VI. Abducens • VII. Facial • VIII. Vestibulocochlear (Accoustic) • IX. Glossopharyngeal • X. Vagus • XI. Accessory • XII. Hypoglossal 3.01 Remember the structures of the nervous system

23. 31 pairs of spinal nerves (originate in spinal cord) Structures of the peripheral nervous system 3.01 Remember the structures of the nervous system

24. Peripheral nervous system Autonomic nervous system Sympathetic nervous system Parasympathetic nervous system Somatic nervous system Structures of the peripheral nervous system 3.01 Remember the structures of the nervous system

25. Sympathetic nervous system AKA: fight or flight These nerves connect to all internal organs Parasympathetic nervous system AKA: rest and digest The vagus nerve connects with organs of the upper body The pelvic nerve connects with the organs of the lower body Structures of the peripheral nervous system Autonomic nervous system 3.01 Remember the structures of the nervous system

26. These nerves are located along the spinal cord. Connect skeleton, muscles and joints to the brain. Structures of the peripheral nervous system Somatic nervous system 3.01 Remember the structures of the nervous system

27. Structures of the nervous system Remember this! 3.01 Remember the structures of the nervous system