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Shared characteristics of the Nervous system and endocrine system are..
Chemical communication with targeted tissues
The Nervous system has how many subdivisions?
2....Central nervous system (CNS) and Peripheral nervous system (PNS)
The Central nervous system (CNS) consists of
Brain and spinal cord
Integrating, processing, and coordinating
Intelligence, memory, learning, and emotion
The Peripheral nervous system (PNS) consists of
Neural tissue outside the CNS
Provides sensory information to the CNS
Carries motor commands to peripheral tissues
The efferent division is further divided into two divisions, these are?
Somatic nervous system (SNS) and the Autonomic
nervous system (ANS)
The afferent division carries information from
Somatic sensory receptors, Visceral sensory receptors, and Special sense organs
Autonomic nervous system (ANS) is
Visceral motor system
Smooth muscle, cardiac muscle, and glands
Neural tissue contains two distinct cell types, these are?
nerve cells, or neurons, and supporting cells, or neuroglia.
Neuroglia have many functions, including
Provide framework for the neural tissue
Maintain the intercellular environment
Act as phagocytes
There is how many more neurogila and glial cells than there are neurons?
Roughly five time the amount
Astrocytes have a variety of functions, which include?
Controlling the interstitial environment
Maintaining the blood-brain barrier
Creating a three-dimensional framework for the CNS
Performing repairs in damaged neural tissue
Guiding neuron development
Neurons can be categorized into three functional groups:
Sensory neurons, Motor neurons and Interneurons, or association neurons
Exteroceptors = external environment are for?
Touch, temperature, and pressure sensations
Special senses of sight, smell, and hearing
Proprioceptors = internal environment?
Position and movement of skeletal muscles and joints
Information carried in somatic sensory neurons
Interoceptors = internal environment are for?
Digestive, respiratory, cardiovascular, urinary, and reproductive systems
Sensations of deep pressure and pain as well as taste
An electrical impulse, or action potential, develops after the
Plasmalemma is stimulated to its threshold.
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