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Bones of the Skull

Bones of the Skull. Skull = Cranium and Facial Bones. Cranium (8) 1. Frontal bone – forehead 2. Parietal bones (2) – roof and side of cranium 3. Temporal bones (2) 4. Occipital bone – contains foramen magnum 5. Sphenoid bone 6. Ethmoid bone. Facial bones (14)

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Bones of the Skull

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  1. Bones of the Skull

  2. Skull = Cranium and Facial Bones • Cranium (8) 1. Frontal bone – forehead 2. Parietal bones (2) – roof and side of cranium 3. Temporal bones (2) 4. Occipital bone – contains foramen magnum 5. Sphenoid bone 6. Ethmoid bone

  3. Facial bones (14) 1. Maxilla – upper jaw 2. Mandible – lower jaw, only movable portion of skull 3. Nasal bones 4. Zygomatic bone – forms eye orbits and cheekbones 5. Palantine bones 6. Lacrimal bones 7. Vomer 8. Nasal Conchae The Hyoid bone – only bone in the body that does not articulate with another bone

  4. What is TMJ? Temporo-Mandibular Joint (TMJ), the joint where the mandible (the lower jaw) joins the temporal bone of the skull A small disc of cartilage separates the bones

  5. The Brain • Who was Phineas Gage? http://www.youtube.com/watch?v=c6kRP41ygrI What is a Lobotomy? (Prefrontal) Surgery performed to the frontal lobe of the brain in an attempt to modify behavior of severely psychotic patients http://www.youtube.com/watch?v=_0aNILW6ILk

  6. Functions of the Brain • Cerebrum – largest part of the brain right and left hemispheres that each contain 4 lobes: Frontal, Parietal, Temporal, Occipital Functions – higher intellectual processes, concentration, planning, problem solving (frontal) Sensations of temp., touch, pressure, pain, understanding speech and using words to express thoughts and feelings (parietal) Responsible for hearing, remembering visual scenes, music (temporal) Vision (occipital)

  7. - Cerebellum Functions in muscle coordination, muscle tone, maintaining posture

  8. Brain Stem 1. medulla oblongata: regulates heartbeat, breathing, blood pressure 2. pons: regulates breathing rate 3. midbrain: reflex centers for visual, auditory, and tactile responses

  9. Hypothalamus maintains homeostasis, regulates hunger, thirst, sleep, body temp., water balance, blood pressure • Thalamus receives all sensory input and relays them to the appropriate parts of the brain

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