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Anatomy > Chapter 9 Part 2 > Flashcards

Chapter 9 Part 2 Flashcards

0
Q

What does the brain stem connect

A

Cerebrum to the spinal cord

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1
Q

What is a nerve tissue that connects the cerebrum to the spinal cord?

A

Brain stem

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2
Q

What are the 4 parts to the brain stem?

A

Diencephalon, mid-brain, pons, medulla oblongata

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3
Q

What is the diencephalon located between?

A

Cerebral hemispheres and above the midbrain

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4
Q

What are the parts of the diencephalon?

A

Thalamus, hypothalamous, limbic system, pineal gland

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5
Q

what is the thalamus

A

Central relay station for sensory impulses to cerebral cortex

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6
Q

The cortex communicates with the thalamus through what?

A

Descending fibers

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7
Q

What can’t the thalamus do?

A

Pinpoint sensory stimulation

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8
Q

What does the hypothalamus do?

A

Maintain homeostasis

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9
Q

Name the activities the hypothalamus regulates

A

Heart rate and blood pressure, body temperature, water and electrolyte balance, body weight and controls hunger, control of movements and glandular secretions of stomach, production of neuroses retort substances that stimulate the pituitary gland, sleep and wakefullness

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10
Q

What is the limbic system involved in

A

Emotional experience and expression

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11
Q

The limbic system can?

A

Modify the way a person acts and guide behavior to increase survival

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12
Q

What shape is the pineal gland?

A

Cone shaped

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13
Q

What is the pineal gland and what is it attached to

A

Endocrine gland attached to the thalamus

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14
Q

Where is the mid brain located

A

Between the diencephalon and pons

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15
Q

What does the mid brain serve as?

A

Reflex center for vision and hearing

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16
Q

What does the mid brain contain?

A

Nerve fibers

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17
Q

Where are the pons located?

A

On the underside of brain stem

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18
Q

What does the dorsal portion of the pons consist of?

A

Longitudinal nerve fibers that relay impulses to and from medulla oblongata and cerebrum

19
Q

What does the ventral portion pon consist of?

A

Transverse nerve fibers that transmit nerve fibers that transmit impulses from cerebrum to centers within cerebellum

20
Q

what is the medulla oblongata?

A

Enlarged continuation of spinal cord extending from the pons to do ramen magnum

21
Q

In the medulla oblongata, what passes through it because of its location

A

All ascending and descending fibers

22
Q

Nuclei in the medulla oblongata function as control centers for what activities?

A

Cardiac center: controls heart rate
Vasometer center: controls blood pressure
Respiratory center: regulate rate, rhythm, and depth of breathing
Other nuclei: function as centers for reflexes associated with coughing sneezing swallowing and vomiting

23
Q

The reticular formation is what?

A

A network of nerve fibers scattered throughout the medulla oblongata pons and mid brain

24
Q

The reticular formation signals what?

A

The cerebral cortex with sensory impulses activating it into a state of wakefullness

25
Q

What is the cerebellum

A

A large mass of tissue located below occipital loves of the cerebrum and behind the medulla oblongata and pons

26
Q

Where is the cerebellum located?

A

Below the occipital lobe of the cerebr and behind the medulla oblongata and pons

27
Q

How many hemispheres to the cerebellum are there?

A

2

28
Q

What are the 2 hemispheres of the cerebellum connected by?

A

Vermis

29
Q

What are the 2 hemispheres of the cerebellum separated by?

A

Dura mater

30
Q

What is the cerebellum covered by?

A

A thin layer of gray matter of cerebellar cortex

31
Q

The cerebellum consists of how many nerve tracts?

A

3

32
Q

The 3 pairs of nerve fibers in the cerebellum are what?

A

Inferior peduncles, middle peduncles, superior peduncles

33
Q

The inferior peduncles job is what?

A

To bring sensory info concerning the position of the limbs joints and other body parts to the cerebellum

34
Q

The middle peduncles do what?

A

Transmit signals from the cerebral cortex to cerebellum

35
Q

The superior peduncles do what?

A

Send impulses from cerebellum to the midbrain

36
Q

The cerebellum functions as what

A

Reflex center

37
Q

The cerebellum helps maintain what

A

Posture

38
Q

The cerebellum is divided into how many main parts

A

3

39
Q

The cerebellum is divided into 3 main parts. What are they?

A

Cerebrocerebellum, vestibullocerebellum, spinocerebellum

40
Q

The cerebrocerebellum does what

A

Receives signals from cerebrum

41
Q

The vestibulorcerebellum does what

A

Receives input from the brain stem

42
Q

The spinocerebellum does what

A

Receives electrical signals from the spinal cord

43
Q

The surface of the cerebellum is shaped by thin folds called what

A

Folia

44
Q

The cerebellum coordinates what

A

Motor activity, posture and balance, and helps us store I do about motor skills

45
Q

Damage to cerebellum may cause what?

A

Tremors in accurate movements of voluntary muscles, loss of muscle tone, a distorted walk, loss of equilibrium

Anatomy (8 decks)

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