Exam 5 Flashcards
What are the four lobes of the cerebrum?
Frontal, temporal, parietal, and occipital
What is the frontal lobe responsible for?
Motor control, eye movement control, logical thinking and planning, personality, and speech
Where it the frontal lobe located?
Pre-central gyrus
Where is Broca’s area located?
Frontal lobe
What is Broca’s area responsible for?
Speech production; actually the saying the words that you think
What is the parietal lobe responsible for?
Sensory and taste
Where its the parietal love located?
Post-central gyrus
What is the occipital lobe responsible for?
Vision; figuring out what you see
What is the temporal lobe responsible for?
Hearing, equilibrium, and language
Where is Wernicke’s area located?
Temporal lobe
What is Wernicke’s area responsible for?
Understanding speech; making sense of the words spoken
What is the hypothalamus responsible for?
Temperature, how you perceive pain, and homeostasis (blood pressure, hormones from pituitary, produces ADH and Oxytocin)
What is the thalamus responsible for?
Filters information going to the brain and lets some pass and stops other - secretary; sends messages to consciousness
What is the cerebellum responsible for?
Muscle memory; motor movement you don’t have to think about, static equilibrium, propresoceptoin (knowing where the body is in space)
What is the corpus callous responsible for?
Allows communication from he body to the brain; crosses over (right side of the body goes to the left side of the brain)
What is the basal nuclei responsible for?
Regulation of mood and complex behavior
Which branch of the spine do we find lateral horns in the vertebrae?
Thoracic
What is the function of the dorsal (posterior) horn?
Receive sensory information from the body and sends it onward to the brain
What is the function of the ventral (anterior) horn?
Sends out motor neurons
What is the function of the lateral horn?
Houses cell bodies that coordinate with the sympathetic nervous system
How does myelination of axons affect the nervous system?
Increases speed of synapses due to jumping from one axon the next
How does the diameter of axons affect the nervous system?
A great diameter increases the speed of the synapses
What are Schawnn cells?
Myelinated axons in the peripheral nervous system (PNS)
What are oligodendrocytes?
Myelinated axons in the central nervous system (CNS)
Describe the ascending pathway
Impulses are sent from the body to the spinal cord. Impulse enters through the dorsal horn and then the information crosses over to the other side and continue up through the spinal cord to the thalamus. Information ends up in the somatosensory cortex.
Which tract is pain carried on?
Spinothalamic tract
What is detected in damaged tissues that signals pain?
K+, prostaglandins, and leukotrienes
Pain in the peripheral body send which neurotransmitters?
Glutamate, substance P, and nitric oxide
How do the neurotransmitters synapse in the spinal cord?
Use of nitric oxide
Describe the somatic sensory pathway
?
Describe the descending pathway
The information goes down trough the thalamus, down the spinal cord, crosses over at the dorsal horn and releases neurotransmitters to alleviate pain. The information is sent out to the body from the spinal cord.
What part of the brain influences how you perceive pain?
Hypothalamus