Seeley's Anatomy and Physiology
chapter 11
Sensory receptors - ✔️✔️The endings of neurons, or separate, specialized cells that
detect temperature, pain, touch, pressure, light, sound, odor, and other stimuli
Nerve - ✔️✔️A bundle of axons and their sheaths, it connects the CNS to sensory
receptors, muscles, and glands
Cranial nerves - ✔️✔️Nerves that originate from the brain, 12 pairs
Spinal nerves - ✔️✔️Nerves that originate from the spinal cord, 31 pairs
Major functions of nervous system - ✔️✔️Receiving sensory input, integrating
information, controlling muscles and glands, maintaining homeostasis, establishing and
maintaining mental activity
Central nervous system - ✔️✔️CNS, consists of the brain and the spinal cord
Peripheral nervous system - ✔️✔️PNS, consists of all the nervous tissue external to
the CNS
Ganglion - ✔️✔️A collection of neuron cell bodies located outside the CNS
Plexus - ✔️✔️An extensive network of axons and, in some cases, neuron cell bodies,
located outside the CNS
Sensory division - ✔️✔️Afferent division. Transmits electrical signals from the sensory
receptors to the CNS, functional subdivision of the PNS
Motor division - ✔️✔️Efferent division. Transmits action potentials from the CNS to
efferent organs, such as muscles and glands, functional subdivision of the PNS
Somatic nervous system - ✔️✔️SNS, controls conscious activities
Autonomic nervous system - ✔️✔️ANS, controls subconscious activities
Sympathetic division - ✔️✔️Subdivision of ANS, most active during physical activity
Parasympathetic division - ✔️✔️Subdivision of ANS, regulates resting functions, such
as digesting food or emptying the urinary bladder
chapter 11
Sensory receptors - ✔️✔️The endings of neurons, or separate, specialized cells that
detect temperature, pain, touch, pressure, light, sound, odor, and other stimuli
Nerve - ✔️✔️A bundle of axons and their sheaths, it connects the CNS to sensory
receptors, muscles, and glands
Cranial nerves - ✔️✔️Nerves that originate from the brain, 12 pairs
Spinal nerves - ✔️✔️Nerves that originate from the spinal cord, 31 pairs
Major functions of nervous system - ✔️✔️Receiving sensory input, integrating
information, controlling muscles and glands, maintaining homeostasis, establishing and
maintaining mental activity
Central nervous system - ✔️✔️CNS, consists of the brain and the spinal cord
Peripheral nervous system - ✔️✔️PNS, consists of all the nervous tissue external to
the CNS
Ganglion - ✔️✔️A collection of neuron cell bodies located outside the CNS
Plexus - ✔️✔️An extensive network of axons and, in some cases, neuron cell bodies,
located outside the CNS
Sensory division - ✔️✔️Afferent division. Transmits electrical signals from the sensory
receptors to the CNS, functional subdivision of the PNS
Motor division - ✔️✔️Efferent division. Transmits action potentials from the CNS to
efferent organs, such as muscles and glands, functional subdivision of the PNS
Somatic nervous system - ✔️✔️SNS, controls conscious activities
Autonomic nervous system - ✔️✔️ANS, controls subconscious activities
Sympathetic division - ✔️✔️Subdivision of ANS, most active during physical activity
Parasympathetic division - ✔️✔️Subdivision of ANS, regulates resting functions, such
as digesting food or emptying the urinary bladder
