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Flashcards in Chapter 14 - The Brain Deck (133)
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Chapter 14 - The Brain

The Human brain contains approx X% of the body's neurla tissue

98%

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Chapter 14 - The Brain

Typical brain weighs

1.4 kg or 3 lbs (male brain is on average 10% larger than female brains)

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Chapter 14 - The Brain

List of the major regions of the brain

FORMAT CEREBRUM, CEREBELLUM, DIENCEPHALON, BRAIN STEM

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Chapter 14 - The Brain

What is the cerebrum

FORMAT The largest region of the brain. It is divided into left/right paired hemispheres

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Chapter 14 - The Brain

What is the cerebrum responsible for

FORMAT Concious thought, sensations, intellect, memeory, complex movements

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Chapter 14 - The Brain

What is the cerebellum

FORMAT The second largest strucutre in the brain. Also divided into 2 paired hemispheres.

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Chapter 14 - The Brain

What is the function of the cerebellum

Control and coordinate movement and balance

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Chapter 14 - The Brain

What does the diencephalon contain

Thalamus and hypothalamus

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Chapter 14 - The Brain

What is the thalamus

relay center of the brain. All sensory info from the body will go through the thalamus. Once in the thalamus it will be center to the appropriate higher centers in the cerebrum

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Chapter 14 - The Brain

What is the hypothalamus

Involved with emothions and autonomic functions.

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Chapter 14 - The Brain

What part of the hypothalmus connects the pituitary gland to the hypothalamus, giving nervous control to the pituitary gland

Infundibulum

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Chapter 14 - The Brain

What does the diencephalon link

Cerebrum and brain stem

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Chapter 14 - The Brain

What part of the brain processes auditory and visual information

mesencephalon (mid brain)

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Chapter 14 - The Brain

What connects the brain stem to the cerebellum

Pons. It has nuclei for visceral and somatic motor control

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Chapter 14 - The Brain

What connects the spinal cord to the brain

Medulla oblongata

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Chapter 14 - The Brain

What does the medulla oblongata do?

relays info to the thalamus and regulates autonomic functoins such as breathing, heart rate, digestion, and blood pressure

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Chapter 14 - The Brain

how does the CNS begin in development?

hollow neural tube

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Chapter 14 - The Brain

which end of the hollow neural tube does the 3 enlargements form (which go on to create the 3 divisions of the brain)

cephalic end

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Chapter 14 - The Brain

what are the primary brain vesicles

Prosencephalon. Mesencephalon. Rhombencephalon.

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Chapter 14 - The Brain

What does the prosencephalon form in brain development?

forms the telencephalon (becomes the cerebrum) and the diencephalon (becomes the adult diencephalon)

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Chapter 14 - The Brain

What does the mesencephalon form in brain development?

the adult mesencephalon (mid brain)

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Chapter 14 - The Brain

What does the rhombencephalon form in brain development?

forms the metencephalon (becomes the cerebellum and pons) and myelecephalon (becomes the medulla)

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Chapter 14 - The Brain

How many ventricles are there during brain development?

Four. Formed in different regions of the brain.

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Chapter 14 - The Brain

What do the ventricles do?

Circulate CSF through the brain.

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Chapter 14 - The Brain

What is the function of the CSF

cusion neural tissue, support the brain, and transport nutrients, waste products and chemical messengers

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Chapter 14 - The Brain

How is CSF formed?

by a network of ependymal cells. The cells secrete CSF into the ventricles of the brain, remove wast products, and adjust the compositioin of the CSF over time.

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Chapter 14 - The Brain

What is the name of the ependymal cells that create CSF?

choroids plexus

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Chapter 14 - The Brain

What is the reate of CSF production daily?

500 ml/day

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Chapter 14 - The Brain

What is the body's volume of CSF?

150 ml. It is replaced every 8 hours.

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Chapter 14 - The Brain

Where is the CSF circulated?

from the choroids through the ventricles, and the central canal of the spinal cord. Also circulated through the subarachnoid space