Lobes of the Brain Parietal lobe Frontal lobe Occipital lobe Temporal lobe
Functional areas of the brain Motor function area Motor function area Sensory area Broca’s area Somatosensory Association area Auditory area Higher mental functions Visual area Association area Wernicke’s area
Circulated in arachnoid space, ventricles, and central canal of the spinal cord
The CSF is composed of water, glucose, protein, and several ions, especially sodium ion (Na) and chloride ion. Buoyancy- 1,500 g when removed, when suspended 50 g., it neither sinks nor floats Protection from striking the cranium when jolted. Transport of nutrients, chemical messages and removal of waste products. Stability of chemical environment.- homeostatically regulates the env. Of the CNS neurons., slight change can cause malfunction Clear, colorless liquid that fills and surrounds the CNS. 500 to 800 ml/day produced but 100 to 160 ml is present at one time.
Ventricles and Location of the Cerebrospinal Fluid Figure 7.17a
Ventricles and Location of the Cerebrospinal Fluid Figure 7.17b
Remember as the “E” division = exercise, excitement, emergency, and embarrassment
The neurotransmitter of the preganglionic sympathetic neurons is acetylcholine (ACh). It stimulates action potentials in the postganglionic neurons. The neurotransmitter released by the postganglionic neurons is noradrenaline (also called norepinephrine).
Sympatheticnervous system T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T 1 1 T12 L1 L2 L3 Pupils Salivary glands Heart Bronchi of lungs Liver Stomach Small intestines Adrenal gland Large intestine Kidney Rectum Bladder Genitals