34 Questions
What type of sensation is detected by nociceptors?
Pain and tissue damage
What is the function of Tactile Corpuscles?
Detecting light pressure
What is the term for the ability of the brain to recognize the site of a stimulus?
Projection
What is the effect of Glycine binding to its receptor on a neuron?
It causes hyperpolarization of the cell membrane.
What type of summation occurs when multiple presynaptic neurons fire simultaneously at the same postsynaptic neuron?
Spatial summation
What is the result of a stroke in the occipital lobe?
Total vision loss
What is the function of Merkel Disks?
Detecting two-point discrimination
What is the membrane potential at which an action potential is produced?
-55mV
What happens to the voltage-gated Na+ channels during an action potential?
Activation gates open and inactivation gates close.
What is the result of a stroke in the hippocampus?
Memory loss
What is the characteristic of an action potential in terms of its magnitude?
It is of the same magnitude no matter how strong the stimulus.
What type of channels are always open in a neuron at rest?
Leak channels
What type of memory combines short-term memory and lasts from days to years?
Long-term memory
Which part of the spinal cord supplies the upper limbs with nerves?
Cervical enlargement
What is the function of the meninges?
To protect the brain and spinal cord
What is the purpose of epidural anesthesia?
To relieve pain in a specific region
What is the function of the white matter in the CNS?
To transmit information to the brain and body
In which limbs would the crossed extensor reflex typically occur in a four-legged animal?
In all four limbs
What type of reflex helps Jeff maintain his arm position as he fills his cup with coffee?
Stretch reflex
What type of reflex is the blinking of eyes?
Innate reflex
What happens to the muscle when the Golgi tendon reflex is triggered?
It relaxes
What is the purpose of the dorsal root ganglion?
To process sensory information
Why did Hugo drop the weight during the competition?
The Golgi tendon reflex caused his arm muscles to relax
What is the difference between ascending and descending tracts?
Ascending tracts transmit sensory information, while descending tracts transmit motor information
What is the function of the arachnoid mater?
To protect the brain and spinal cord
What is the primary function of the Golgi tendon reflex?
Prevention of damage to tendons by relaxing skeletal muscles
What type of neuron is stimulated by the stretch of the muscle spindle?
Sensory neuron
What is the primary function of the stretch reflex in maintaining arm position?
To monitor changes in weight
What occurs in the integrating center of the Golgi tendon reflex?
Sensory neurons synapse with inhibitory interneurons
What is the purpose of the conus medullaris?
To mark the end of the spinal cord
What is the role of the dorsal root in the withdrawal reflex?
Transmission of signals to the spinal cord
What type of innervation is responsible for relaxing muscles that oppose withdrawal in the withdrawal reflex?
Reciprocal innervation
What is the result of the integration of sensory information in the withdrawal reflex?
Contraction of flexor muscles and relaxation of extensor muscles
What is the purpose of the Golgi tendon organs in the Golgi tendon reflex?
To respond to increased tension within tendons
Learn about the role of neurotransmitters, such as glycine, in synaptic transmission and how they can cause hyperpolarization and inhibitory postsynaptic potentials. Understand how graded potentials summate to trigger action potentials.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
