Limbic System Flashcards
The limbic system consists of:
a. portions of cerebral cortex, cingulate and parahippocampal gyrus
b. amygdala, hypothalamus, and hippocampus
c. hippocampus and caudate nucleus
d. a and b
e. a and c
d. a and b
Limbic system involved in emotional responses and drive-related behaviors and memory. It consists of areas of the brain involved in these functions.
Limbic system generates feelings/emotions from _____, and bridges _____ responses to environmental changes
generates emotions from SENSORY INPUTS
autonomic, voluntary responses
In the limbic system, the _____ is responsible for emotional responses, while the _____ is responsible for learning and memory
a. hippocampus, amygdala
b. nucleus acumbens, hippocampus
c. amygdala, hippocampus
d. hippocampus, nucleus acumbens
e. amygdala, nucleus acumbens
c. amygdala, hippocampus
The limbic cortex:
a. only consists of subcortical nuclei
b. consists of 3-layered allocortex of hippocampus & septal area
c. consists of mesocortex in parahippocampal gyrus, cingulate, and insula
d. b and c
e. none of the above
d. b and c
Which of the following is/are considered subcortical nuclei of the limbic system?
a. amygdala
b. hypothalamus
c. nucleus accumbens
d. reticular formation
e. all of the above are subcortical nuclei of the limbic system
e. all of the above are subcortical nuclei of the limbic system
_______ gets info from olfactory areas (minor) and many other areas (major)
Entorhinal cortex
Afferents to the hippocampus within the limbic system include:
a. input from septal nuclei
b. entorhinal cortex
c. output from subiculum
d. a and b
e. all of the above
d. a and b
input from septal nuclei (afferent to hippocampus) affects chances that _______
information in the hippocampus will be retained
Name the three zones of the hippocampus
- Dentate gyrus
- Hippocampus proper (cornu ammonis)
- Subiculum: the transition between hippocampus proper and adjacent parahippocampal cortex
____ neuron projects to CA3
dentate
CA3 neuron projects into
fimbria & CA1
CA1 neuron projects to ______
subiculum
subiculum projects to _____
fimbria
-alvear pathway
______ projects to entorhinal cortex
subicular neuron
Entorhinal neuron projects to ______
sensory cortex
Efferents from the hippocampus include
a. outputs from subiculum
b. outputs from entorhinal cortex
c. a and b
d. none of the above
c. a and b
Fornix
a. is the direct continuation of the fimbria
b. has a short course under the corpus callosum
c. a and b
d. neither a nor b
a. is the direct continuation of the fimbria
b is incorrect because it has a LONG course under the corpus callosum
hippocampal connections involve:
a. fornix
b. axons from subiculum and hippocampus
c. crus
d. a and b
e. all of the above
e. all of the above
The trunk involved in hippocampal connections is formed by the joining of the right and left ______ near the hippocampal commissure
the trunk divides into two pillars, which split near _______
crus, anterior commissure
Precommissural fibers are for the septal area, while postcommissural fibers are for ________
hypothalamus and mammillary body
Which of the following are involved in the Papez circuit?
a. Neurons in cingulate gyrus project back
b. Projection into entorhinal cortex and hippocampus
c. Projections from anterior nucleus of thalamus to cingulate cortex
d. Fornix and mammillothalamic tract
e. all of the above
e. all of the above
The hippocampus is responsible for ______ memory
a. short-term
b. long-term
c. working
d. b and c
e. all of the above
e. all of the above
What are the three categories of long-term memory?
- Explicit
- Semantic
- Implicit
Match the following descriptions to a) Explicit memory b) Implicit memory and c) Semantic memory
- Performing a learned motor function, like riding a bike
- Pertains to spoken/ written words, extended to knowledge of facts/ concepts
- Recall of facts/ events, aka declarative memory or episodic memory
1 b 2 c 3 a
