Chapter 2 Flashcards
(72 cards)
True or false reality is subjective and produced by the brain
True
Plasticity
Neural tissue has the capacity to adapt to the world by changing how its functions are organized
True or false connections among neurons in a given functional system do not change in response to the environment
False neurons are constantly changing in response to experience
What happens to the brain when we learn something new?
The cortical regions taking part can actually increase in size to accommodate the learning
Neuroplasticity
The nervous system’s potential for physical or chemical change that enhances it’s adaptability to environmental change in its ability to compensate for injury
Phenotypic plasticity
The individuals capacity to develop into more than one phenotype
What is the brains primary function?
To produce behavior and movement
Anterior
Located near or toward the front of the animal or the front of the head; also known as frontal and rostral
Posterior
Located near or toward the tale of the animal; also known as caudle
Coronal
Cut vertically from the crown of the head down; used in reference to the plane of a brain section that reveals a frontal view
Dorsal
On or toward the back of the animal or in reference to human brain nuclei located above; in reference to brain sections, a viewing orientation from above
Horizontal
Cut along the horizon; used in reference to the plane of a brain section that reveals a dorsal view
Inferior
Located below (ventral)
Lateral
Toward the side of the body or brain
Medial
Toward the middle, specifically the bodies midline; in reference to brain sections, a side view of the central structures
Superior
Located above (dorsal)
Sagittal
Cut lengthways from front to back of the skull; the plane that reveals a view into the brain from the side; a cut in the midsagittal plane divides the brain into symmetrical halves, a medial view.
Ventral
On or toward the belly or the side of the animal where the belly is located; in reference to brain nuclei, located below
What are the four functions of cerebrospinal fluid?
Buoyancy (helps keep the brain afloat the weight of the unsuspended brain would damage ventral neurons); protection (to some extent); chemical stability (removes waste products associated with metabolic activity); and prevention of ischemia (Low blood flow; Controls blood pressure in the brain)
What are the four ventricles in the brain?
Third ventricle, fourth ventricle, right lateral ventricle, left lateral ventricle.
Where is cerebrospinal fluid produced?
It is produced in the lateral ventricles in the brain.
Who is most at risk for concussions?
Children around the age of two. But the second highest reach for concussions is between the age of 16 to 22.
What happens in a concussive event?
Can result in to discrete areas of damage: the coup (The area of impact), and the countercoup (damage to the brain opposite the area of impact).
What are some of the results of chronic traumatic encephalopathy?
Atrophy of the brain (most likely resulting from neuronal death); enlargement the ventricles; and increased brain proteins associated with Alzheimer’s disease.