Neuroanatomy

Week- 3 Neuroanatomy >>> Understanding the Brain: The Neurobiology of Everyday Life

From the telecephalon directly to midbrain, and then to diencephalon and finally to hindbrain where the pons is.

From the telencephalon directly to diencephalon and then to midbrain where the pons is.

From the telencephalon directly to diencephalon and then to midbrain, and finally to hindbrain where the pons is.

From telencephalon directly to the midbrain where the pons is.

From telencephalon directly through the cerebellum to the pons.

A disorder in the developmental pathway for mesoderm

A disorder in the developmental pathway for endoderm

A disorder in the developmental pathway for ectoderm

Contained in the bony cranium that is sufficient to protect the brain without cushioning.

Contained in a sac made of dura that is filled with cartilage.

Cushioned by fluid in a sac made of only the arachnoid mater

Cushioned by cartilage in a sac made of only the arachnoid mater.

Cushioned by fluid in a sac made of the meninges which in turn are contained in the bony cranium.

5. A man is thrown from a horse and lands hard on his buttocks, harming the nerve fibers in the cauda equine (this is called cauda equine syndrome) as they travel to exit from the spinal canal. All of a sudden he is unable to void urine or feces. Assuming that all resulting symptoms arise from damage to nerve roots from the same part of the spinal cord that is important to voiding, which of the following symptoms do you expect will accompany this man’s voiding issues? Check all that apply.

1 point

Loss of sensation from the saddle region (perineum)

Loss of sensation from the area around the belly button

Loss of sensation from the front of the legs

Inability to have an erection

Loss of sensation from the back of the legs

6. About 80-85% of the visual field is visible from both eyes. However, the far edges of the right and left visual fields are only visible from the eye on the same side. These far edges are monocular (visible only from one eye) “crescents” (they are indeed shaped as crescents) and are distinct from the far larger binocular fields (visible to both eyes). Which of the following are correct? Check all that apply.

1 point

When a person has both eyes open, the only part of the visual field that will be lost by blindness in one eye is the monocular visual field on the same side (as the blinded eye).

When a person has both eyes open, the only part of the visual field that will be lost by blindness in one eye is the monocular visual field on the opposite side (to the blinded eye).

Damage to the visual pathways caudal to (behind) the optic chiasm on one side will disrupt vision of the whole half field, called a hemifield, on the same side.

Damage to the visual pathways caudal to (behind) the optic chiasm on one side will disrupt vision of the whole half field, called a hemifield, on the opposite side.

Paralysis of the right leg with insensitivity to touch on the right leg.

Paralysis of the right face, arm, and leg with insensitivity to touch on the right side.

Broca’s aphasia and paralysis of the right arm and leg.

Paralysis of the right leg with insensitivity to noxious stimulation (pain) on the left leg.

Ataxia in the right arm and right facial paralysis.

A disease such as myasthenia gravis that affects the neuromuscular junction usually causes demyelination of central axons.

A brainstem stroke may kill neurons and interrupt axons.

Multiple sclerosis may result in axonal demyelination in the brainstem, and may kill neurons as well.

The polio virus can kill brainstem motoneurons but does not cause axonal demyelination.

This is a disorder of peripheral nervous system development and therefore it would not be surprising if it was accompanied by polio-like symptoms because of an absence of motoneurons.

This is a disorder of central nervous system development and therefore it would not be surprising if it was accompanied by polio-like symptoms because of an absence of motoneurons.

This is a disorder of peripheral nervous system development and therefore it would not be surprising if it was accompanied by an absence of temperature-responsive sensory neurons.

This is a disorder of central nervous system development and therefore it would not be surprising if it was accompanied by an absence of temperature-responsive sensory neurons.

10. You discover a new fish that has a pair of prehensile (moveable) fins with finger-like protuberances. These fins are located on either side of the trunk at the bottom of the rib cage. This fish has exquisite motor control of the fin and can sense very light touch applied to the protuberances. In fact, the fish’s motor control of and sensory sensitivity from its fin protuberances are similar to our ability to move and sense fine touch on our fingers. In this fish, which of the follow is likely to be true?

1 point

The thoracic cord is likely to be enlarged relative to that of a similar fish species without the fin protuberances.

The lumbar cord is likely to be enlarged relative to that of a similar fish species without the fin protuberances.

The cervical cord is likely to be enlarged relative to that of a similar fish species without the fin protuberances.

The sacral cord is likely to be enlarged relative to that of a similar fish species without the fin protuberances.

Neuroanatomy

Week- 3 Neuroanatomy >>> Understanding the Brain: The Neurobiology of Everyday Life

Hearing

Voluntary Movements

Perception and Vision

Neurocommunications

Homeostasis

The Nervous System

Week- 3 Neuroanatomy >>> Understanding the Brain: The Neurobiology of Everyday Life

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