The central nervous system contains the brain, which is the center of the nervous system, and the spinal cord, which coordinates simple reflexes.
The central nervous system contains____
, which is the center of the nervous system, and_____
, which coordinates simple reflexes.
11 answers
Which actions are functions of the somatic nervous system? Check all that apply.
regulates involuntary activities
increases heart rate and blood pressure
relays information to and from internal organs
stimulates digestion
regulates voluntary activities
relays information to and from skin and skeletal muscles
regulates involuntary activities
increases heart rate and blood pressure
relays information to and from internal organs
stimulates digestion
regulates voluntary activities
relays information to and from skin and skeletal muscles
The functions of the somatic nervous system include:
- regulates voluntary activities
- relays information to and from skin and skeletal muscles
The other options listed pertain to the autonomic nervous system, which regulates involuntary activities and relays information to and from internal organs.
Antonella is on vacation with some friends in Montana. One day, she is out hiking in the woods when she hears a sound in the distance. She turns around and sees a grizzly bear coming out of the bushes. She freezes and becomes fearful of what the bear will do.
Which system prepares the body for the situation described in the scenario?
the somatic nervous system
the parasympathetic nervous system
the central nervous system
the sympathetic nervous system
Which system prepares the body for the situation described in the scenario?
the somatic nervous system
the parasympathetic nervous system
the central nervous system
the sympathetic nervous system
The system that prepares the body for the situation described in the scenario is the sympathetic nervous system. This system is responsible for the "fight or flight" response, which activates during stressful situations, such as encountering a grizzly bear, to prepare the body to react.
Which is an example of a reflex?
putting on a coat when you see that it is snowing outside
pulling your foot away after stepping on a sharp object
laughing at a funny joke told by one of your classmates
eating a snack when your stomach growls from hunger
putting on a coat when you see that it is snowing outside
pulling your foot away after stepping on a sharp object
laughing at a funny joke told by one of your classmates
eating a snack when your stomach growls from hunger
An example of a reflex is pulling your foot away after stepping on a sharp object. This quick, automatic response is a reflex action that occurs without conscious thought to protect the body from harm.
Use the drop-down menus to complete the sentences about how neurons distribute information to the body.
Information enters the neuron through the
.
Information passes through the
to the axon.
Information leaves the neuron through the
.
Information enters the neuron through the
.
Information passes through the
to the axon.
Information leaves the neuron through the
.
Here are the completed sentences:
Information enters the neuron through the dendrites.
Information passes through the cell body to the axon.
Information leaves the neuron through the axon terminals.
Use the drop-down menus to complete the sentences.
The neuron that transmits the impulse is called the____
, and the cell receiving the impulse is called the____
.
When a nerve impulse arrives at the axon terminal of the neuron, it triggers the release of molecules called____
. These molecules diffuse across the synapse and bind to receptors on the next cell.
The neuron that transmits the impulse is called the____
, and the cell receiving the impulse is called the____
.
When a nerve impulse arrives at the axon terminal of the neuron, it triggers the release of molecules called____
. These molecules diffuse across the synapse and bind to receptors on the next cell.
Here are the completed sentences:
The neuron that transmits the impulse is called the presynaptic neuron, and the cell receiving the impulse is called the postsynaptic neuron.
When a nerve impulse arrives at the axon terminal of the neuron, it triggers the release of molecules called neurotransmitters. These molecules diffuse across the synapse and bind to receptors on the next cell.