With motor neurons? - afferent = sensory information move toward the brain and spinal cord -efferent= information is taken away from the brain and spinal Cord 3 what is function of interneurons? - contact nearby neurons in brain, spinal cord or ganglion 4 what are subdivisions of the PNS? - the subdivisions of the PNS are somatic nervous system, autonomic nervous system and enteric nervous
What are the components of the ANS (long) neural reflexes? The components of the ANS (long) neural reflexes include a CNS control center in the spinal cord and the brain. b. What is the stimulus for ANS regulation? Distention for many involuntary digestive movements.
In other words, neurotransmitters are the messages that nerve cells send out, and they cross the gaps between each of the cells. When released by the sending neuron, neurotransmitters travel across the synapse and neuron. Therefore, they influence whether that neuron will generate a neural impulse or not. B) An agonist mimics neurotransmitters functions by binding to receptor sites and stimulating the sending neuron. C) An antagonist does the opposite of agonist.
#7 In another synapse the neurotransmitter creates a graded potential which triggers an action potential in the lower motor neuron 6. #4 A primary interneuron forms an action potential and crosses to the opposite side of the brain. 7. #6 A stimulus from the Brain causes a graded potential and then an action potential to form in an upper motor neuron 8. #3 At a synapse a presynaptic sensory neuron stimulates the postsynaptic interneuron to form a graded potential in its cell
Schwann cells – (PNS myelin) Myelinating Schwann cells wrap around axons of motor and sensory neurons to form the myelin sheath. the conduction of nervous impulses along axons, nerve development and regeneration, trophic support for neurons, production of the nerve extracellular matrix, modulation of neuromuscular synaptic activity, and presentation of antigens to T-lymphocytes. |. Oligodendrocytes - (CNS myelin) their main function is the insulation of axons in the CNS. * Satellite oligodendrocytes are functionally distinct from most oligodendrocytes.
• Sensory organs function as receptors and receive the stimuli, then it sends nerve impulses to the related effectors. 3. How does the brain use the senses to search/find stimuli in the environment? • Stimuli from the environment are transformed into neural signals which are then interpreted
The hippocampus on the other side is responsible for the production of corticosteroids (chemicals that produce physiological responses to stimuli). How the mind creates memories is controlled by the hippocampus. So as to work efficiently, the amygdala and the hippocampus rely on each other greatly. The amygdala regulates the responses to stimuli and the hippocampus uses these responses in the formation of both short-term and long-term memories. Damage to the amygdala or hippocampus causes loss of emotions and memory respectively.
4. A motor neuron conducts a nerve impulse along an efferent pathway from the integration center to an effector. 5. An effector responds to the efferent impulses by contracting (if the effector is a muscle fiber) or secreting a product (if the effector is a gland). Reflexes can be categorized as either autonomic or somatic.
Where do they come from? What are glycoproteins and proteoglycans? What is fibronectin and what is its function? What are the roles of the extracellular matrix? What are plasmodesmata?
Thus, a spatial pattern of neuronal stimulation develops in the medial superior olivary nucleus, with sound from directly in front of the head stimulating one set of olivary neurons maximally and sounds from different side angles stimulating other sets of neurons on opposite sides. This spatial orientation