Central Nervous System Pdf Brainstem Central Nervous System • motor (efferent) neurons •carry impulses from the central nervous system •interneurons (association neurons) •found in neural pathways in the central •nervous system, connect sensory and motor neurons. Nervous system 1. sensory input—gathering information sensory receptors monitor changes, called stimuli, occurring inside and outside the body 2. integration nervous system processes and interprets sensory input and decides whether action is needed 3. motor output a response, or effect, activates muscles or glands © 2018 pearson education, ltd.
31 2 The Central Nervous System Pdf Brain Central Nervous System Focuses on the nervous system and its basic components and their precise function in coordination of body. introduction and role of nervous system. differentiation of central nervous system and peripheral nervous system. central nervous system and its role in maintaining homeostasis. The anterior (ventral) root and rootlets contain axons of motor neurons, which conduct nerve impulses from the cns to effectors (muscles and glands). external anatomy of the spinal cord and spinal nerves. a transverse section of the spinal cord reveals regions of white matter that surround an inner core of gray matter. Neurons transmit signals from the central nervous system to the effector cells and are sometimes called motor neurons. interneurons connect neurons within specific regions of the central nervous system. Motor division (efferent) – conducts action potentials from cns toward the pns (by way of the motor neurons) creating a response from an effector organ – has 2 subdivisions a. somatic motor system – controls skeletal muscle only b. autonomic system – controls effects smooth muscle, cardiac muscle, and glands – 2 branches.
Nervous System Pdf Nervous System Neuron Neurons transmit signals from the central nervous system to the effector cells and are sometimes called motor neurons. interneurons connect neurons within specific regions of the central nervous system. Motor division (efferent) – conducts action potentials from cns toward the pns (by way of the motor neurons) creating a response from an effector organ – has 2 subdivisions a. somatic motor system – controls skeletal muscle only b. autonomic system – controls effects smooth muscle, cardiac muscle, and glands – 2 branches. The two major divisions of the nervous system are the central˜nervous system (cns) and the peripheral nervous system (pns). the cns comprises the brain and spinal cord. it˜controls the body by processing and responding to sensory input from the peripheral˜nervous system. the pns is made up of the nerves and ganglia outside the brain. Central nervous system • composed of gray matter (neuron cell bodies) (forebrain 3) basal nuclei: central nervous system b. cerebrum (cerebral hemispheres): brain anatomy: • function: 1) subconscious control of skeletal muscle tone 2) control stereotypical motor movements (e.g., arm swing) caudate nucleus putamen corpus globus pallidus. Neurons, the functional cells of the nervous system, enable this process of sensory input, integration and motor output to occur seamlessly. neurons and parts of neu rons, within the brain and spinal cord constitute the central nervous system (cns) and outside the brain and spinal cord constitute the peripheral nervous system (pns.