L20 Structure of Major Brain Areas, Basic Sensory and Motor Pathways

Question 1 of 14

1

Choose the correct statements about the external anatomy of the brain.

Select one or more of the following:

The central sulcus sits between the frontal and parietal lobes.
The parieto-occipital sulcus is anterior to the central sulcus.
The lateral sulcus is superior to the transverse fissure.
The pre-central gyrus and the post-central gyrus sit on the parietal and frontal lobes respectively.

Explanation

Question 2 of 14

1

Choose the incorrect statement about the function of the brain's lobes.

Select one of the following:

The parietal lobe is primarily concerned with sensory information.
The occipital lobe is primarily concerned with vision.
The temporal lobe is associated with memory and hearing.
The frontal lobe is primarily concerned with motor information.

Explanation

Question 3 of 14

1

The ❌ is split into two regions, the ❌.
The motor cortex is split into two regions: the ❌ cortex which sits on the ❌ gyrus, and the ❌ cortex, the anterior region of the motor cortex which ❌. Together they control ❌ somatic efferent signals.
The pre-frontal cortex is involved in ❌. ❌ to it can result in a change of personality, and ❌ of it can be altered by alcohol. It is abnormalities in this area which can cause personality altering mental illnesses such as ❌.

Drag and drop to complete the text.

frontal lobe

pre-frontal cortex and the motor cortex

primary motor

pre-central

post-central

pre-motor

voluntary

involuntary

plans movement

decision making, foresight, and emotion

Damage

development

schizophrenia

Explanation

Question 4 of 14

1

The diencephalon consists only of the thalamus and hypothalamus.

Select one of the following:

True
False

Explanation

Question 5 of 14

1

The corpus callosum sits anterior to the thalamus/diencephalon.

Select one of the following:

True
False

Explanation

Question 6 of 14

1

The regions of the brainstem, from most superior to most inferior, are:

Select one of the following:

Pons, midbrain, medulla oblongata
Midbrain, pons, medulla oblongata
Medulla oblongata, midbrain, pons

Explanation

Question 7 of 14

1

The cerebral cortex (white matter) is superficial to grey matter of the brain.

Select one of the following:

True
False

Explanation

Question 8 of 14

1

Choose the correct statements about the internal anatomy of the brain.

Select one or more of the following:

Deep collections of cell bodies (grey matter) are called deep nuclei.
The 3 types of white matter are differentiated by orientation.
The commissural tracts join the cerebral hemispheres. E.g. The corpus callosum
The corticospinal tract is an association tract.
Projection tracts are communication pathways between regions of the same side of a cerebral hemisphere e.g. pre-motor and motor cortex pathway

Explanation

Question 9 of 14

1

The primary motor cortex sits on the pre-central gyrus, and it's neurons have no specific organisation.

Select one of the following:

True
False

Explanation

Question 10 of 14

1

Which statement about the corticospinal tract is false?

Select one of the following:

It is a projection tract
It contains efferent neuron cell bodies
Most of its fibres cross over to the opposite side of the body in the medulla oblongata
Axons synapse in the dorsal horn of the spinal cord

Explanation

Question 11 of 14

1

Choose the incorrect statement about the somatosensory pathway

Select one of the following:

The 'relay' neuron between the spinal cord and the thalamus resides in the medulla oblongata
The flow of information crosses over to the opposite side when passing through the relay neuron, before ascending to the thalamus
There is another synapse between the neuron from the thalamus and somatosensory cortex (in the parietal lobe)
The mapping of the somatosensory cortex is the opposite to that of the motor cortex.

Explanation

Question 12 of 14

1

The neurons in the somatosensory cortex have very short, or no axons, while the neurons in the motor cortex have relatively longer axons.

Select one of the following:

True
False

Explanation

Question 13 of 14

1

The cerebellum ❌ motor and sensory systems, ❌ movement guided by sensory feedback.
Firstly, the ❌ cortex initiates an AP for movement. This is copied/relayed to the ❌. Next, ❌ information about the movement goes to the cerebellum. The cerebellum ❌ these sets of information, and ❌ the motor output (coordination).

Drag and drop to complete the text.

integrates

coordinating

motor

cerebellum

sensory

compares

adjusts

Explanation

Question 14 of 14

1

Choose the incorrect statement about the basal ganglia

Select one of the following:

There are 5 types of basal ganglia (groups of cell bodies in the brain)
The substantia nigra are the basal ganglia which cause Parkinson's disease when they fail to function
The basal ganglia are part of a circuit in a brain and their role is to select an appropriate movement
The basal ganglia are not involved in initiation or termination of movement

	Created by Mer Scott about 7 years ago