Kinds of Neutrons Sensory Neutrons bipolar carry incoming information from the sense receptors to the CNS cid 127 Motor Neurons multipolar carry outgoing information from the CNS to muscles and glands Interneurons unipolar connect the two neurons Nervous System Nervous System Central brain and spinal cord Peripheral Somatic controls voluntary movement of skeletal muscles Autonomic controls self regulated action of internal organs and glands Parasympathetic calming Sympathetic arousing Endocrine System Endocrine System body s slow chemical communication system Commmunication is carried out by hormones synthesized by a set of glands Hypothalamus brain region controlling the pituitary gland Pituitary gland secretes many different hormones some of which affect other glands thyroid gland affects metabolism Hormones a chemical that is released by one organ and conveyed by the blood to other organs whose activities in influences Ex epinephrine adrenalin insulin estrogen progesterone female hormones androgens male hormones Hormones vs Neurotransmitters both are chemicals secreted inside our bodies hormones are produced by endocrine gland neurotransmitters are produced at nerve terminals when triggered by and electrical impulse hormones are secreted directly into the bloodstream neurotransmitters are secreted at nerve synapse hormones can be synthesized whereas it is impossible to make neurotransmitter they are made inside the body only Hormone Beach Test Frank Beach Injected female days with male hormones androgens shortly after birth cid 127 Male dogs lift their legs to urinate female dogs squat 62 of injected females assume the male position during urination If only we could find men or women who routinely self dose themselves with sex hormones Hormones Unethical in humans cid 127 Would it affect their behavior Birth control pills Hormones and Birth Control Adams Gold and Burt 1978 women who were on the pill vs women who used other forms of birth control Keep track of times they initiated sexual contact over the course of their menstrual cycle high levels of estrogen in women s blood stream affects interest in sex BC pills suppress the peak of estrogen around ovulation the sexual pique is suppressed as well Limbic System doughnut shaped system of neural structures at the border of the brainstem and cerebrum associated with emotions such as fear aggression and drives for food and sex includes hippocampus amygdala and hypothalamus cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 Cerebral Cortex intricate fabric of interconnected neural cells that covers the cerebral hemispheres body s ultimate control and information processing center Cerebral cortex ultimate control and information processing center Right hemisphere controls left side of body Left hemisphere controls right side of body creativity spatial organization artistic abilities language analyzing logical math reading writing cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127 cid 127
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