brain of the gut
occupies cranial cavity
controls the opposite responses to 'fight or flight' responses
'rest and digest' responses
consists of 31 segments corresponding to the 31 pairs of spinal nerves.
It detects changes in the internal and external environment through sensory receptors located throughout the body.
it depresses the activ ity of the body preparing it for rest by decreasing the heart rate, constricting the pupils and the vessels to the skeletal muscles, and stimulating digestion
receptors Head, body surfaces, limbs, and special sense organs
can be divided into four main parts: the brainstem, cerebellum, diencephalon, and cerebrum.
part of the nervous system responsible for control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes.
basic components of the nervous system
responsible for storing sensory information, creating thoughts, emotions, and memories.
Skeletal muscle
responses are voluntary
Smooth muscle, cardiac muscle, and glands
div ided into the somatic nervous system (SNS), autonomic nervous system (ANS), and enteric nervous system (ENS).
control center of the nervous system
controls our 'fight or flight' responses
responses are involuntary and include peristalsis (waves of smooth muscle contraction, which propels food through the GI tract) and glandular secretions.
quickly activates our body preparing it for action by increasing the heart rate, dilating the pupils and the blood vessels to the muscles, increasing skin sweating, and suppressing digestion.
the functional units of nervous tissue
is the processing and control center of the nervous system, analyzing and consolidating incoming sensory information and triggering motor responses.
Involuntary
continuous with the medulla oblongata as it exits the skull through the foramen magnum, and descends into the vertebral cana
