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Anatomy Basics > Week 4 > Flashcards

Week 4 Flashcards

1
Q

What nerve is responsible for sensation of the nipple region?

A

T4

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2
Q

What surrounds individual muscle fibres?

A

Endomysium

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3
Q

What is a fasicle?

A

A collection and congregation of muscle fibres surrounded by Perimysium

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4
Q

What surrounds and encapsulates fasicles?

A

Perimysium

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5
Q

What is the outer layer of a muscle surrounded by?

A

Epimysium

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6
Q

What is a Pennate Muscle?

A

When muscle fibres don’t run in parallel but rather converge in on a point (e.g. Pectoralis Major)

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7
Q

What is a parallel muscle?

A

This is when muscle fibres run in parallel (e.g. the biceps)

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8
Q

What separates compartments of muscles?

A

Intermuscular Septa

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9
Q

WHat are the two structural divisions of the Nervous System?

A

Central Nervous System and Peripheral Nervous System

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10
Q

What is the Somatic Nervous System in control of?

A

These are in control of voluntary movements

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11
Q

What is the Autonomic Nervous System in control of?

A

Involuntary movements

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12
Q

What are the 2 subsections of the Autonomic Nervous System?

A

The Sympathetic and Parasympathetic nervous system

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13
Q

What surround individual neuron fibres?

A

Endoneurium

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14
Q

What surrounds a fascicle of neuron fibres?

A

Perineurium

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15
Q

What surrounds a collection of fascicles of nerve fibres?

A

Endoneurium

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16
Q

How many pairs of spinal nerves do you have?

A

31

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17
Q

What is the name given to the collection of nerves which innervate upper and lower extremities?

A

Plexuses

18
Q

What are the two kinds of Neuron fibres?

A

Afferent (Sensory) Neurons and Efferent (Motor) Neurons

19
Q

Where is the cell body found in nerves?

A

In the Dorsal Route Ganglion

20
Q

What kind of nerve fibres are found in dorsal and ventral ramus?

A

Both Efferent and Afferent Neurons

21
Q

What region of the body does the Dorsal Ramus innervate?

A

The back

22
Q

What region of the body do Ventral ramus innervate?

A

Anteriolateral regions

23
Q

What is a dermatome?

A

Is the area of skin innervated by a single spinal root (spinal route is where peripheral nervous system joins central nervous system)

24
Q

What is a Myotome?

A

Is a group of muscle innervated by a sing spinal root

25
Q

What direction do the external obliques run in?

A

Fibres run downwards like your putting your hands in your pockets

26
Q

What direction do internal obliques run in?

A

Fibres run upwards at 45 degree angle towards the sternum direction

27
Q

What direction do the tranverse abdominis run in?

A

Fibres run horizontally along the coronal plane

28
Q

What nerve supplies the extensor muscles in the arm and forearm?

A

Radial Nerve

29
Q

What nerve supplies the extensors in the forearm and arm?

A

Musculocutaneous Nerve

30
Q

What does an agonist muscle do?

A

They are the prime mover which contract the muscle

31
Q

What does an antagonistic muscle do?

A

They relax and lengthen the muscle

32
Q

What does a fixator muscle do?

A

They provide stability around joints and other muscles

33
Q

What nerve innervates the posterior portion of the thigh?

A

Sciatic Nerve

34
Q

What are the three muscle compartments of the thigh?

A

Anterior, Posterior and Medial

35
Q

What do the intrinsic muscles of the hand allow for?

A

Precision and fine motor movements

36
Q

What do the intrinsic muscles of the foot allow for?

A

Supporting while walking and maintaining the arches of the foot

37
Q

Where do spinal nerves exit the vertebral column?

A

Through Intervertebral Foramen

38
Q

What is the somatic reflex arch?

A

This is the Afferent neuron synapsing onto an Interneuron and then synapsing onto an Efferent neuron

39
Q

What would happen if we had damage to the dorsal horn?

A

We would lose sensation in the area that the spinal root innervates

40
Q

What would happen if there was damage to the ventral horn?

A

We would lose motor function in the area that the spinal root innervates?

41
Q

What would happen if we damaged a ramus?

A

We would lose both Motor Function (Efferent) and Sensation (Afferent) in the area it innervates

Anatomy Basics (4 decks)

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