CNS Lab answers

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Anatomy and Physiology II
Nervous System and CNS
Station 4: The Brain
1. Below is a diagram of the right lateral view of the human brain.
a) Using the cue cards provided match the terms with the appropriate
letters on the diagram.
b) Colour each lobe of the brain a different colour.
c) Be sure that you can locate each of the structures on the model
provided.
Structure
Letter
Frontal lobe
D
Parietal lobe
L
Temporal lobe
F
Precentral gyrus
C
Parieto-occupital fissure K
Postcentral gyrus
B
Lateral fissure
E
Central sulcus
A
Cerebellum
I
Medulla
H
Occipital lobe
J
Pons
G
Station 2: The Brain
1. Using the cue cards provided match the terms with the appropriate
structures on the diagram below.
Be sure you can locate the structures on the model provided.
2. Referring to the brain areas on the cue cards, match the appropriate brain
structures with the following descriptions.
a)
Site of regulation of water balance, body temperature,
rage and pain centers. __hypothalamus____
b)
Reflex centers involved in regulating respiratory rhythm in
conjunction with lower brain stem centers. ___pons___
c)
Responsible for the regulation of posture and coordination of
skeletal muscle movements. ____cerebellum_______
d)
Contains autonomic centers that regulate blood pressure and
respiratory rhythm as well as coughing and
sneezing centers. __medulla oblongata___
3. Use the chart from page 472 to complete the chart below
summarizing the functions of the principle parts of the brain.
Part
Function
Brain Stem
medulla oblongata
See chart 14.1
pons
midbrain
Cerebellum
Diencephalon
epithalamus
thalamus
subthalamus
hypothalamus
Station 3
Functional Areas of the Cerebral Cortex
Part A: Sensory Areas
Complete the chart below. (Use pages 443-745 for help)
Sensory Area
1. primary somatosensory area
Function
- perception of pain, temp, light, touch taste,
spatial discrimination
2. primary visual area
- receive info from contralateral retina
3. primary auditory area
- receives sound and evaluates pitch, rhythm
and loudness
4. primary gustatory area
- taste
5. primary olfactory area
- smell
Identify the sensory areas of the cortex on the diagram below.
See diagram book
Part B: Motor Areas
Complete the chart below. (Use pages 443-745 for help)
Motor Area
1. primary motor area
Function
- voluntary control of skeletal muscles
2. Broca’s area
- motor speech (coordinating tongue, lips
and throat)
Identify the motor areas of the cortex on the diagram below.
See diagram book
Part C: Association Areas
Complete the chart below. (Use pages 443-745 for help)
Association Area
Function
1. somatosensory association area - interpret and integrate sensations
- stores past sensory experience memories
2. visual association area
- interprets visual stimuli from past
experience (ie. recognizes faces)
3. auditory association area
(Wernicke’s area)
- perception/identifying sound from past
memory
4. common integrative area
- integrate all senses into single thought
5. frontal eye fields
- controls voluntary scanning movements of
the eye
6. premotor area
- causes groups of muscles to contract in
sequence
- memory bank for skilled movement
Identify the association areas of the cortex on the diagram below.
See diagram book
Station 4: Cerebrospinal Fluid
Part A:
1. On the diagram below, correctly identify all of the structures having leader
lines using the choices provided on the cue cards.
2. Colour all of the spaces filled with cerebrospinal fluid blue.
Part B:
Select the best answer.
1. Formation of the cerebrospinal fluid occurs mainly in the:
a) cerebral aqueduct
b) superior sagittal sinus
c) choroid plexuses
d) median foramen
2. The lateral ventricles are located within the:
a) cerebrum
b) cerebellum
c) spinal cord
d) none of the above
3. CSF is absorbed into the venous blood via the:
a) cisterna magna
b) falx cerebri
c) choroids plexus
d) arachnoid villus
4. CSF is NOT found in the:
a) central canal
b) subarachnoid space
c) third ventricle
d) dural mater
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