limbic system

Question 1

Gray matter in medial and basal parts of the hemisphere that forms a border around the brainstem

Answer 1

Limbic Lobe

Question 2

the limbic is aka

Answer 2

synthetic Lobe

Question 3

the limbic system controls _____

Answer 3

emotion, behavior and drive

Memory

Question 4

what are the connecting pathways

Answer 4

alveus
fimbria
fornix
mammilothalamic tract
stira terminalis

Question 5

what makes up the hippocampal formation

Answer 5

hippocampus
dentate gyrus
parahippocampal gyrus

Question 6

seahorse in coronal section

Answer 6

hippocampus

Question 7

Convex ventricular surface covered with ependyma, beneath which lies a thin layer of white matter

Answer 7

alveus

Question 8

Curved elevation of gray matter extending throughout the entire length of the floor of the inferior horn of the lateral ventricle

Answer 8

Hippocampus

Question 9

expanded anterior end of hippocampus

Answer 9

Pes hippocampus

Question 10

consists of nerve fibers that have originated from the hippocampus

Answer 10

Alveus

Question 11

alveus will converge medially to form _____

Answer 11

fimbria

Question 12

Fimbria is continuous with the ______

Answer 12

crus of the fornix

Question 13

Hippocampus terminates where

Answer 13

posteriorly beneath the splenium of the corpus callosum

Question 14

Narrow, notched band of gray matter between the fimbria of the hippocampus & parahippocampus

Answer 14

Dentate gyrus

Question 15

the dentate is cont anteriorly c _____

Answer 15

uncus

Question 16

the dentate is cont posteriorly c _____

Answer 16

indusium griseum

Question 17

thin; vestigial layer of gray matter covering the superior surface of the corpus callosum

Answer 17

Indusium griseum

Question 18

Embedded in superior surface of indusium griseum

Answer 18

medial & lateral longitudinal striae

Question 19

remnants of white matter of vestigial indusium griseum

Answer 19

Striae

Question 20

Between the hippocampal fissure and collateral sulcus

Answer 20

Parahippocampal Gyrus

Question 21

Situated partly anterior and partly superior to the tip of the inferior horn of the lateral ventricle

Answer 21

Amygdaloid Nucleus (Amygdala)

Question 22

emerges from posterior aspect of amygdaloid nuc

Answer 22

Stria terminalis

Question 23

Anteriorly, the body of the fornix is connected to the corpus callosum by the

Answer 23

septum pellucidum

Question 24

Fimbria now leaves the posterior end of the hippocampus as

Answer 24

crus of fornix

Question 25

2 crura connected by transverse fibers

Answer 25

commissure of the fornix

Question 26

Crura converge to form the

Answer 26

body of the fornix

Question 27

Body of the fornix splits anteriorly into

Answer 27

2 anterior columns of the fornix

Question 28

Each column disappears into the lateral wall of the 3rd ventricle to reach

Answer 28

mammillary bodies

Question 29

connects the mammillary body with anterior nuclear group of thalamus

Answer 29

Mammillothalamic tract

Question 30

Mammillothalamic tract is responsible for

Answer 30

Memory

Question 31

emerges from posterior aspect of amygdaloid nucleus and runs a bundle of fibers posteriorly in the roof of the inferior horn of the lateral ventricle on the medial side of the tail of the caudate nucleus

Answer 31

Stria terminalis

Question 32

stria terminalis is responsible for

Answer 32

Control of autonomic, neuroendocrine and behavioral responses

Question 33

3 layers of hippocampus

Answer 33

Molecular layer - superficial; nerve fibers and scattered small neurons Pyramidal layer - large pyramid-shaped cells Polymorphic layer - inner

Question 34

3 layers of dentate gyrus

Answer 34

Molecular layer Granular layer - densely arranged rounded or oval neurons with axons terminating on dendrites of pyramidal cells of hippocampus Polymorphic layer

Question 35

Declarative (Explicit) Memory

Answer 35

conscious recall of facts and experiences

Question 36

Nondeclarative (Implicit) memory

Answer 36

Nonconscious learning of skills, habits and other acquired behaviors

Question 37

2 types of declarative memory

Answer 37

Semantic Episodic

Question 38

Semantic (Nonunique, generic)

Answer 38

memory of culturally and educationally acquired encylopedic knowledge such as meaning of words, arithmetical facts, geography, history

Question 39

Episodic (Unique)

Answer 39

memory of personally experienced facts and events with special spatial and temporal localization

Question 40

loc of semantic

Answer 40

Temporal neocortex

Question 41

loc of episodic

Answer 41

Mesial temporal cortex (hippocampus, entorhinal cortex, perirhinal cortex and parahippocampal gyrus cortico-cortical connections from anterior neocortices to entorhinal cortex, hippocampus-mamillary bodyanterior and medial thalamic nuclei via fornix and mammillothalamic tract; basal forebrain cholinergic nuclei (nucleus basalis of Meynert)

Question 42

Short Term Memory

Answer 42

Memory of a limited amount of information held continuously in consciousness for a short period (<60s) Decays in seconds if not refreshed continuously

Question 43

loc of short term memory

Answer 43

Left hemisphere dominant

Question 44

left prefrontal cortex

Answer 44

verbal

Question 45

right prefrontal cortex

Answer 45

nonverbal

Question 46

Implicit Memory

Answer 46

Supports the learning and retention of skills “Knowing how”

Question 47

Procedural (skill learning)

Answer 47

repeated performance of a motor act enhances and automates future skill for the same act; resistant to forgetting

Question 48

Priming

Answer 48

short-lived enhancement of perceptually based performance following a recent exposure to visually similar material

Question 49

Procedural (skill learning) loc

Answer 49

Functions of subcortical circuits particularly the basal ganglia and cerebellum