Autonomic centers that control blood pressure, heart rate, and respiration are located in the?
What structure is covered by many blood cells and adheres tightly to the surface of the brain?
The brain requires substantial blood supply. The vessels that deliver blood to the brain are?
internal carotid and vertebral arteries
Which of the following is a property of blood-brain barrier?
All of the above
-Astrocytes surround CNS capillaries
-It is absent in portion of hypothalamus
-It is generally permeable to lipid soluble
-The capillarity is interconnected by tight junctions
What contains a spider-web like network of cells and fibers through which cerebrospinal fluid flows?
Hydrocephalus or "water in the brain" may result from?
blockage of CSF circulation or excessive CSF production.
The nucleus gracilis and nucleus cuneatus
-in the medulla oblongata
-relay somatic sensory info to the thalamus
Overseeing the postural muscles of the body and making rapid adjustments to maintain balance and equilibrium functions of the?
The cerebellum can be temporally damaged by stroke or temporally affected by drugs or alcohol. The resulting disturbance in motor is known as?
The reflex movement of the head towards loud noise is directed by mesencephalon. Which nuclei accomplish this?
Damage to the corpora quadrigemina would interfere with?
visual and auditory reflex of the head and neck
Function of the hypothalamus
-controls autonomic centers
-regulates body temperature
Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of?
Cortical regions that interpret sensory information or coordinate motor responses are called ____.
The region of the brain responsible for predicting the consequence of events or actions is the?
prefrontal cerebral cortex
After suffering a stroke Mary finds that she cannot move her right arm. This would suggest that the stroke damage is in the area of the _____ lobe.
After suffering a blow to the back of the head, Phil loses his vision. The blow caused damage to the?
If the corpus callosum is surgically cut,
(all of the above)
- the two cerebral hemispheres operate independently
- objects touched by the left hand can be recognized but not verbally identified
- conscious decisions are made without regard to sensations from the left side
-symptoms of the "disconnection syndrome" appear
Integrative centers concerned with performance of complex processes are restricted to either the left or the right hemisphere.These complex processes include
-understanding spatial relationships
Damage to the pyramidal cells of the cerebral cortex would directly affect?
voluntary motor activity
Which of the cranial nerves is named for the fact that it "wanders," that is innervates structures through the thorax and abdomen?
Why is injury to the medulla oblongata frequently fatal?
This region of the brain contains the centers for regulating the cardiovascular system and initiating respiration, both vital to life. In addition, most sensory and motor tracts pass through the medulla oblongata between higher and lower centers of the nervous system.
A patient develops a clot that blocks the blood supply to the right cerebral hemisphere. What signs and symptoms would you expect as a result of this blockage?
Because the right primary motor cortex controls the muscles of the left side of the body, you would expect left-sided paralysis whose extent and severity will depend on the extent of brain injury. Similarly, the patient will experience somatic sensory loss on the left side of the body. Higher-order functions such as memory, planning, spatial orientation, and emotional control could be damaged but many language skills would be spared.