Chapter 14

A nerve is: A ganglion A nerve cell A plexus A cordlike collection of nerve fibers (axons) that sends electrochemical signals between different parts of the body A receptor

A cordlike collection of nerve fibers (axons) that sends electrochemical signals between different parts of the body

Which of the following is TRUE about reflexes? Reflex reactions only involve motor neurons. A reflex reaction is an automatic reaction. They are controlled by the brain. A person is completely unaware of a reflex reaction.

A reflex reaction is an automatic reaction.

Why do we need set names for structures in the brain? So that we can learn more about ourselves. All of these are correct So that doctors can describe areas of concern with each other. So that teachers can communicate about brain functioning.

All of these are correct

___ conduct impulses to the brain: Descending nerve tracts Efferent nerves Condescending nerve tracts Resending nerve tracts Ascending nerve tracts

Ascending nerve tracts

Where does the spinal cord start? At the level of the chest At the level of the lower back At the end of the pelvis Near the prefrontal cortex (the front of the brain) At the end of the brainstem

At the end of the brainstem

I send signals to motor neurons, what am I? Peripheral Nervous System Sensory Neurons Central Nervous System Reflex Neurons

Central Nervous System

How do the roles of the hippocampus and the hypothalamus differ? The Hippocampus processes feelings of fear and anger while the hypothalamus helps to release hormones. The hippocampus processes long-term memory while the hypothalamus regulates hunger. The Hippocampus influences body temperature and thirst while the hypothalamus processes long-term memory. The Hippocampus influences sex drive while the hypothalamus stores information for later use.

The hippocampus processes long-term memory while the hypothalamus regulates hunger.

An elevation on the surface of your brain surrounded by one or more sulci is best known as a: Hemisphere Lobe Sulcus Gyrus

Gyrus

The cervical spinal cord is the one running through/by the: Neck Lower Back Pelvis Head Chest

Neck

The spinal cord functions to: Transmit signal to the brain only Only transmit signals for reflexes, like the knee jerk reflex Only transmits signals to and from the brain Only transmit signals from the brain None of these answers are correct

None of these answers are correct

What component of the body gathers sensory input and delivers it to the brain? The heart and lungs Digestive organs Sensory organs Central nervous system

Sensory organs

The oldest parts of the brain are the _____. frontal, temporal, parietal and occipital lobes brainstem, thalamus, reticular formation and cerebellum hypothalamus, hippocampus, amygdala and pituitary gland thalamus, hypothalamus, hippocampus and cerebellum

brainstem, thalamus, reticular formation and cerebellum

Which of the following is the best statement about the function of neurons? Dendrites conduct signals toward the cell body and axons conduct signals away from the cell body. Signals can travel in either direction in axons, but only toward the cell body in dendrites. Signals can travel in either direction in both axons and dendrites. Signals will always travel in either direction in dendrites, but only away from the cell body in axons. Axons conduct signals toward the cell body and dendrites conduct signals away from the cell body.

Dendrites conduct signals toward the cell body and axons conduct signals away from the cell body.

What is the name for a collection of nerve cells that form a nerve center outside of the brain and spinal cord? Nerve Ganglion Dendrite Axon Plexus

Ganglion

Which of the following functions is controlled by the autonomic nervous system? Eating Pain perception Sight Running Heart rate

Heart rate

How can parts of the limbic system be remembered? Hungry Hounds Obey Pavlov Hungry Hounds Ate Pavlov Hungry Dogs Ate Pavlov Hungry Dogs Eat Pavlov

Hungry Hounds Ate Pavlov

the anatomical part that separates the frontal and parietal lobe from the temporal lobe is known as the: Lateral Gyrus Lateral Sulcus Central Gyrus Central Sulcus

Lateral Sulcus

What is the combining form which may refer to the spinal cord? Myo Encephalo Myelo Cerebro Mylo

Myelo

Which of the following is FALSE about synapses? There are lots of neurotransmitter receptors on the plasma membrane of the target cell at the synapse. Neurotransmitters diffuse across the space between the signaling and target cells at the synapse. Neurotransmitters can bind to receptors on both sides of the synapse and cause ion-specific channels to open. Neurotransmitter receptors at the synapse are coupled to ion-specific channels. Both excitatory and inhibitory signals can be sent across synapses.

Neurotransmitters can bind to receptors on both sides of the synapse and cause ion-specific channels to open.

What is the term for a network of nerves that intersect or interjoin one another? Lexus Ganglion Soma Neuron Plexus

Plexus

If you had a neurological disorder affecting your thermoreceptors, what symptom would you experience? Frequent fevers Problems perceiving hot and cold Trouble regulating your body temperature Increased risk of hypothermia

Problems perceiving hot and cold

Which part of the brain is composed of nerve cells that filter stimuli and runs from the spinal cord through the brainstem and thalamus? Reticular formation Cerebellum Thalamus Brainstem

Reticular formation

How are we able to experience things through our senses of taste and smell? Sensory neurons called chemoreceptors Motor neurons called mechanoreceptors Sensory neurons called mechanoreceptors Sensory neurons called electroreceptors

Sensory neurons called chemoreceptors

The central sulcus: Separate the left hemisphere from the right hemisphere Separates the frontal lobe from the temporal lobe Separates the frontal lobe from the parietal lobe Separates the frontal and parietal lobe from the temporal lobe on each hemisphere

Separates the frontal lobe from the parietal lobe

Anything that activates a nerve cell or nerve and causes an electrochemical signal, called an impulse, to be propagated along a nerve fiber is called a: Ganglion Axons Stimulus Dendrite Neuron

Stimulus

How do thermoreceptors differ from other sensory neurons? They sense pain. They sense temperature. They allow a person to taste. They sense sound. They send visual information.

They sense temperature.

Which of the following is true about motor neurons? They can only control the actions of muscles. They transmit signals to responsive tissues. They send signals from sensory neurons to the brain. They are the only type of neuron that does not transmit signals. They tell the brain what the muscles are doing.

They transmit signals to responsive tissues.

When the dendrite is in its resting state (i.e. the inside of the cell has a net negative charge and the outside of the cell has a net positive charge), its membrane is _____. depolarized localized polarized transmitting

polarized

Sodium-potassium pumps help maintain membrane polarization by _____. pumping three positively-charged sodium ions into the cell for every two positively-charged potassium ions they pump out of the cell pumping positively-charged sodium ions out of the cell and negatively charged chloride ions into the cell pumping both positively-charged sodium ions and positively-charged potassium ions out of the cell pumping three positively-charged sodium ions out of the cell for every two positively-charged potassium ions they pump into the cell pumping positively-charged sodium ions out of the cell and negatively-charged potassium ions into the cell

pumping three positively-charged sodium ions out of the cell for every two positively-charged potassium ions they pump into the cell

The temporal lobe processes information about _____, the parietal lobe processes information about _____ and the occipital lobe of the brain process information about _____ respectively. taste, sound, and sight touch, sound, and sight sound, touch, and sight sight, sound, and touch

sound, touch, and sight