Human Brain Structure and Functions

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Which of the following structures is responsible for forming a barrier that prevents certain substances from entering the brain?

Blood Brain Barrier (correct)

Dura mater

Arachnoid mater

Pia mater

What is the primary function of cerebrospinal fluid?

To nourish the brain

To act as a shock absorber (correct)

To filter out waste products from the brain

To protect the brain from injury

Which of the following is a characteristic of the Blood Brain Barrier?

Low concentration of sodium

Low concentration of potassium

High concentration of potassium

High concentration of sodium (correct)

What is the function of the choroid plexus in the formation of cerebrospinal fluid?

To produce CSF as a filtrate Signup and view all the answers

What is the purpose of the tight junctions formed by astrocyte processes in the Blood Brain Barrier?

To form a barrier that prevents certain substances from entering the brain Signup and view all the answers

What is the requirement for a drug to cross the Blood Brain Barrier?

The drug must be lipid-soluble Signup and view all the answers

What is the primary function of the frontal lobe in voluntary motor activity?

Executing motor commands onto the spinal cord Signup and view all the answers

What is the main difference between the thin gray matter and the thick white matter in the cerebral cortex?

The gray matter is composed of neuron cell bodies and dendrites, while the white matter is composed of myelinated axons Signup and view all the answers

Which region is responsible for integrating somatic, visual, and auditory sensations from the parietal, occipital, and temporal lobes?

Partial Temporal Occipital association cortex Signup and view all the answers

What is the function of the corpus callosum in the brain?

Connecting the left and right cerebral hemispheres Signup and view all the answers

Which of the following is NOT a function of the prefrontal association cortex?

Language comprehension Signup and view all the answers

What is the primary function of the cerebellum?

Coordinates skilled voluntary movement Signup and view all the answers

What type of memories are stored in the cerebellum?

Procedural memories Signup and view all the answers

What is the function of the reticular activating system (RAS) in the brain stem?

Regulates sleep and wakefulness Signup and view all the answers

What is the site of the spinal tap and epidural procedures?

Cauda equina region Signup and view all the answers

How many pairs of nerves exit and enter the vertebral column?

31 pairs Signup and view all the answers

What is the approximate length and diameter of the spinal cord?

45 cm long / 2cm in diameter Signup and view all the answers

What is the primary function of the amygdala in the limbic system?

Mediating fear responses and emotional regulation Signup and view all the answers

What neurotransmitters are involved in the reward and punishment centers of the limbic system?

Dopamine, norepinephrine, and serotonin Signup and view all the answers

What is the result of decreased neurotransmitters in the limbic system?

Decreased emotional regulation and depression Signup and view all the answers

What is the role of the hippocampus in the limbic system?

Forming and consolidating new memories Signup and view all the answers

What is the result of an overactive limbic system?

Psychosis and altered perception Signup and view all the answers

What is the function of the hypothalamus in the limbic system?

Maintaining homeostasis and regulating body temperature Signup and view all the answers

What is the primary function of the basal nuclei?

Inhibition and suppression of movement Signup and view all the answers

Which part of the brain is responsible for the regulation of body temperature?

Hypothalamus Signup and view all the answers

What is the primary function of the cerebellum?

Balance and coordination Signup and view all the answers

Which part of the brain is responsible for the control of involuntary systems?

Brain stem Signup and view all the answers

What is the primary function of the thalamus?

Relay station for synaptic input Signup and view all the answers

Which part of the brain is responsible for crude awareness of sensation?

Thalamus Signup and view all the answers

Human Brain Structure and Functions

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Questions and Answers

Which of the following structures is responsible for forming a barrier that prevents certain substances from entering the brain?

What is the primary function of cerebrospinal fluid?

Which of the following is a characteristic of the Blood Brain Barrier?

What is the function of the choroid plexus in the formation of cerebrospinal fluid?

What is the purpose of the tight junctions formed by astrocyte processes in the Blood Brain Barrier?

What is the requirement for a drug to cross the Blood Brain Barrier?

What is the primary function of the frontal lobe in voluntary motor activity?

What is the main difference between the thin gray matter and the thick white matter in the cerebral cortex?

Which region is responsible for integrating somatic, visual, and auditory sensations from the parietal, occipital, and temporal lobes?

What is the function of the corpus callosum in the brain?

Which of the following is NOT a function of the prefrontal association cortex?

What is the primary function of the cerebellum?

What type of memories are stored in the cerebellum?

What is the function of the reticular activating system (RAS) in the brain stem?

What is the site of the spinal tap and epidural procedures?

How many pairs of nerves exit and enter the vertebral column?

What is the approximate length and diameter of the spinal cord?

What is the primary function of the amygdala in the limbic system?

What neurotransmitters are involved in the reward and punishment centers of the limbic system?

What is the result of decreased neurotransmitters in the limbic system?

What is the role of the hippocampus in the limbic system?

What is the result of an overactive limbic system?

What is the function of the hypothalamus in the limbic system?

What is the primary function of the basal nuclei?

Which part of the brain is responsible for the regulation of body temperature?

What is the primary function of the cerebellum?

Which part of the brain is responsible for the control of involuntary systems?

What is the primary function of the thalamus?

Which part of the brain is responsible for crude awareness of sensation?

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