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ALBANY / OTHER / APSY 214 / What is Forebrain?

What is Forebrain?

What is Forebrain?

Description

School: University at Albany - State University of New York
Department: OTHER
Course: Intro to Biopsychology & Behavioral Neuroscience
Professor: Christine wagner
Term: Fall 2019
Tags: biopsychology, Psychology, and neuroscience
Cost: 50
Name: Biopsych & Behavioral Neuroscience Exam 1 Study Guide
Description: Includes review of key concepts, diagrams, and practice questions (as well as an answer key for the diagrams & questions).
Uploaded: 09/07/2019
9 Pages 4 Views 5 Unlocks
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BIOPSYCHOLOGY & BEHAVIORAL NEUROSCIENCE EXAM 1: STUDY GUIDE


What is Forebrain?



★ Key Concepts:

○ Basic neural anatomy

■ Brain’s protective mechanisms: meninges, cerebrospinal fluid,  blood-brain barrier

■ Forebrain:

● Telencephalon

● Diencephalon

■ Midbrain:

● Mesencephalon

■ Hindbrain:

● Metencephalon

● Myelencephalon

○ Cells of the brain

■ Neurons 

● Process info & send signals

● 4 basic components:

○ Dendrites

○ Soma

○ Axon

○ Terminal button

■ Glia (supporting cells)

● Astrocytes & oligodendrocytes

■ Membrane potentials

● Resting membrane potential: -70 mV (calculated as the  

difference, in mV, between the inside & outside of the cell)

○ A neuron at -70 mV is polarized

● Action potentials: electrical signals in the brain We also discuss several other topics like What ideas shape Wedgewood’s designs and market?
If you want to learn more check out what is communication?
Don't forget about the age old question of Why is the corona of the Sun extremely high temperature?

● Giant squid axon study

○ Threshold of excitation


What is Midbrain?



○ Voltage-gated sodium and potassium channels

○ Synaptic transmission-- five steps 

■ Structure of a synapse

■ Synthesis, packaging, and transport of neurotransmitters

■ Release of neurotransmitters

■ Activation of postsynaptic receptors

■ Reuptake, enzymatic degradation, & recycling of NTs

D I A G R A M S

Make sure you are able to label each of these diagrams-- answer keys are at the  bottom of this study guide. If you want to learn more check out What does hemp refer to?

1

 DIAGRAM  

Label each section as one of the


What is Hindbrain?



following (four words will be used

twice):

Ventral

Anterior

Dorsal

Medial

Posterior

Lateral 

DIAGRAM 2 We also discuss several other topics like what is Chandragupta Maurya?

Label each area with one of the following words: Metencephalon

Diencephalon

Myelencephalon

Mesencephalon

Telencephalon

DIAGRAM 3

Label each lobe of the cerebral cortex with one of the following terms (3 of the terms will be used twice):

Parietal

Temporal

Frontal

Occipital

DIAGRAM 4

Label each step of the giant squid

axon study (select from the steps

below).

K+ channels open

Na+ channels close

Na+ channels open

Refractory period

K+ channels gradually closeWe also discuss several other topics like What is Placebo effect?

E X A M P L E S O F P O T E N T I A L Q U E S T I O N S

Based on the material we have covered in class and the readings, here are some  questions to test your Exam 1 knowledge. Like with the diagrams, an answer key will be provided at the bottom of this study guide.

1. In which subdivision of the brain would you find the cerebellum?

2. An EPSP (excitatory postsynaptic potential involves the _____ of a  postsynaptic membrane.

3. The main function of dendrites on a neuron is to ______.

4. What does it mean for a neuron to be “polarized”?

5. What happens at the threshold of excitation in an action potential? 6. How does Novacain block pain?

7. What happens if a neurotransmitter binds to a chemically activated Na+  channel?

8. The main function of oligodendrocytes is ______.

9. The substantia nigra is involved in ______.

10. In which lobe of the cerebral cortex is the primary somatosensory cortex  located?

NOTE: If you find that these practice questions are helpful for you, be sure to check out my flashcards for this exam-- they are much more extensive and of a similar  format. :)

A N S W E R K E Y S

DIAGRAM 1

DIAGRAM 2

DIAGRAM 3

DIAGRAM 4

1. In which subdivision of the brain would you find the cerebellum?

ANSWER: metencephalon

 2. An EPSP (excitatory postsynaptic potential involves the _____ of a  postsynaptic membrane.

ANSWER: depolarization

3. The main function of dendrites on a neuron is to ______.

ANSWER: receive signals (from other neurons)

4. What does it mean for a neuron to be “polarized”?

ANSWER: a polarized neuron is at its resting membrane potential,

meaning that its cytoplasm is more negatively charged than the outside of the cell

5. What happens at the threshold of excitation in an action potential? ANSWER: Na+ channels open, depolarizing the cell (see Diagram 4)

6. How does Novacain block pain?

ANSWER: it blocks the action potential of the pain signal

7. What happens if a neurotransmitter binds to a chemically activated Na+  channel?

ANSWER: the Na+ channel will open, causing Na+ to rush in, depolarizing the cell (EPSP)

8. The main function of oligodendrocytes is ______.

ANSWER: to create myelin (which is used in myelin sheaths

9. The substantia nigra is involved in ______.

ANSWER: Parkinson’s disease

10. In which lobe of the cerebral cortex is the primary somatosensory cortex  located?

ANSWER: parietal

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