HUMAN BIOLOGY

the nerVOus system 255 What is the cerebral cortex and What does it do? The cerebral cortex forms the outer layer of gray matte ...

256 Chapter 13 What is consciousness? Consciousness is a spectrum of mental activity that includes state of arousal and sleep. ...

the nerVOus system 257 hoW do memories form in the brain? Memories form when sensory messages are processed through short-term ...

258 Chapter 13 disorders of the nervous system Like PD, alzheimer’s disease involves the progres- sive degeneration of brain neu ...

the nerVOus system 259 B dopamine may be involved, and drugs used to treat ADHD increase brain dopamine levels. The mental state ...

260 Chapter 13 morphine, an analgesic (painkiller), is derived from the seed pods of the opium poppy. Like its cousin heroin, it ...

the nerVOus system 261 the nervous system The nervous system produces signals that flow between the brain and spinal cord and ot ...

expLoreon your oWn patellar tendon motor neuron reflex arc extensor muscle of knee (quadriceps femoris) muscle spindle The “knee ...

The Nervous sysTem 263 Sections 13.5, 13.6 The brain and spinal cord make up the central nervous system. The peripheral nervous ...

264 Chapter 13 CritiCaL thinKing Meningitis is an inflamma tion of the membranes that cover the brain and spinal cord. Diagnosi ...

Building on the discussion of the nervous system in Chapter 13, we now explore how sensory receptors and nerves detect and conve ...

266 Chapter 14 Sensory neuron (to CNS) Sensory neuron Action potential Action potential Action potential Stimulus Stimulus Stimu ...

SenSory SyStemS 267 What are the parts of a sensory system? A sensory system has receptors for specific stimuli, such as light. ...

268 Chapter 14 somatic sensation Sensory input from the vari- ous types of receptors that are scattered throughout the body, suc ...

SenSory SyStemS 269 What are somatic sensations? Somatic sensations include touch, pressure, heat and cold, pain, itching, limb ...

270 Chapter 14 taste bud taste buds tonsil A hairlike ending of taste receptor BC D sensory nerve chemical senses Senses that de ...

SenSory SyStemS 271 What are chemical senses? Taste and smell (olfaction) are the human chemical senses. Taste depends on recep ...

272 Chapter 14 cochlea Coiled structure in the inner ear that contains the organ of hearing (organ of Corti). hair cells Mechano ...

SenSory SyStemS 273 What is the sense of hearing? Hearing is the perception of sound waves that are detected by mechanoreceptor ...

274 Chapter 14 A common disorder of the vestibular apparatus is called vertigo. It produces a sensation that the surroundings ar ...