Exam 27: Communication and Control 1: the Nervous System

Humans have sophisticated, highly evolved brains that would be useful in directing all body activities. Yet we have the autonomic division and reflexes that intentionally bypass the conscious centers of the brain and directly handle some responses. Evaluate why this is useful. Also, propose situations to the contrary in which it might be useful to use the brain rather than an autonomic response, and explain why we respond as such anyway.

Match the following. Answers may be used more than once. A) somatic division B) sympathetic division C) parasympathetic division -Stimulates salivation

A person is diagnosed with a brain tumor that is treated with radiation. The treatment is successful, but the doctor believes some brain damage occurred. The patient is constantly complaining of being thirsty, even though she has had plenty of water to drink. Which part of the brain is damaged in this patient and why?

Match the following. Answers may be used more than once. A) somatic division B) sympathetic division C) parasympathetic division -Constricts pupils

Imagine a person's spinal cord has been severed high enough that they feel nothing from their legs. Do the sensory neurons in their legs stop functioning? Explain your answer.

In which layer of cells in the eye is light converted into an electrical signal?

Match the following. A) the "bridge" to the cerebrum B) motor control and balance C) regulates breathing and blood pressure D) regulation of drives E) reasoning and memory -Medulla oblongata

Match the following. A) the "bridge" to the cerebrum B) motor control and balance C) regulates breathing and blood pressure D) regulation of drives E) reasoning and memory -Cerebellum

Match the following. A) the "bridge" to the cerebrum B) motor control and balance C) regulates breathing and blood pressure D) regulation of drives E) reasoning and memory -Hypothalamus

Match the following. Answers may be used more than once. A) somatic division B) sympathetic division C) parasympathetic division -Stimulates skeletal muscles

Match the following. Answers may be used more than once. A) somatic division B) sympathetic division C) parasympathetic division -Inhibits digestion

Novocain, or procaine, is a chemical that dentists use to numb your mouth before drilling. The chemical blocks the sodium gates on sensory neurons, preventing them from opening. Describe how this chemical decreases (One hopes!) the perception of pain.

Motor neurons, which tell muscles to move, leave the spinal cord through the ________.

In which part of the inner ear are vibrations converted into action potentials?

Match the following. Answers may be used more than once. A) somatic division B) sympathetic division C) parasympathetic division -Accelerates heart

Why are sensory receptors often called transducers?

Which part of the brain is probably most involved with dreaming?

Match the following. A) the "bridge" to the cerebrum B) motor control and balance C) regulates breathing and blood pressure D) regulation of drives E) reasoning and memory -Pons

Which division of the autonomic nervous system stimulates digestion?

Match the following. A) the "bridge" to the cerebrum B) motor control and balance C) regulates breathing and blood pressure D) regulation of drives E) reasoning and memory -Cerebrum