Anatomy and Physiology II Nervous System and CNS Station 4: The Brain 1. Below is a diagram of the right lateral view of the human brain. a) Using the cue cards provided match the terms with the appropriate letters on the diagram. b) Colour each lobe of the brain a different colour. c) Be sure that you can locate each of the structures on the model provided. Structure Letter Frontal lobe D Parietal lobe L Temporal lobe F Precentral gyrus C Parieto-occupital fissure K Postcentral gyrus B Lateral fissure E Central sulcus A Cerebellum I Medulla H Occipital lobe J Pons G Station 2: The Brain 1. Using the cue cards provided match the terms with the appropriate structures on the diagram below. Be sure you can locate the structures on the model provided. 2. Referring to the brain areas on the cue cards, match the appropriate brain structures with the following descriptions. a) Site of regulation of water balance, body temperature, rage and pain centers. __hypothalamus____ b) Reflex centers involved in regulating respiratory rhythm in conjunction with lower brain stem centers. ___pons___ c) Responsible for the regulation of posture and coordination of skeletal muscle movements. ____cerebellum_______ d) Contains autonomic centers that regulate blood pressure and respiratory rhythm as well as coughing and sneezing centers. __medulla oblongata___ 3. Use the chart from page 472 to complete the chart below summarizing the functions of the principle parts of the brain. Part Function Brain Stem medulla oblongata See chart 14.1 pons midbrain Cerebellum Diencephalon epithalamus thalamus subthalamus hypothalamus Station 3 Functional Areas of the Cerebral Cortex Part A: Sensory Areas Complete the chart below. (Use pages 443-745 for help) Sensory Area 1. primary somatosensory area Function - perception of pain, temp, light, touch taste, spatial discrimination 2. primary visual area - receive info from contralateral retina 3. primary auditory area - receives sound and evaluates pitch, rhythm and loudness 4. primary gustatory area - taste 5. primary olfactory area - smell Identify the sensory areas of the cortex on the diagram below. See diagram book Part B: Motor Areas Complete the chart below. (Use pages 443-745 for help) Motor Area 1. primary motor area Function - voluntary control of skeletal muscles 2. Broca’s area - motor speech (coordinating tongue, lips and throat) Identify the motor areas of the cortex on the diagram below. See diagram book Part C: Association Areas Complete the chart below. (Use pages 443-745 for help) Association Area Function 1. somatosensory association area - interpret and integrate sensations - stores past sensory experience memories 2. visual association area - interprets visual stimuli from past experience (ie. recognizes faces) 3. auditory association area (Wernicke’s area) - perception/identifying sound from past memory 4. common integrative area - integrate all senses into single thought 5. frontal eye fields - controls voluntary scanning movements of the eye 6. premotor area - causes groups of muscles to contract in sequence - memory bank for skilled movement Identify the association areas of the cortex on the diagram below. See diagram book Station 4: Cerebrospinal Fluid Part A: 1. On the diagram below, correctly identify all of the structures having leader lines using the choices provided on the cue cards. 2. Colour all of the spaces filled with cerebrospinal fluid blue. Part B: Select the best answer. 1. Formation of the cerebrospinal fluid occurs mainly in the: a) cerebral aqueduct b) superior sagittal sinus c) choroid plexuses d) median foramen 2. The lateral ventricles are located within the: a) cerebrum b) cerebellum c) spinal cord d) none of the above 3. CSF is absorbed into the venous blood via the: a) cisterna magna b) falx cerebri c) choroids plexus d) arachnoid villus 4. CSF is NOT found in the: a) central canal b) subarachnoid space c) third ventricle d) dural mater