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HS > The Muscular System > Flashcards

The Muscular System Flashcards

1
Q

The properties of muscle cells include?

A
  1. Excitability (responisve)
  2. Contractility (shorten forcibly)
  3. Estensibility (stretch)
  4. Elasticity (return to rest)
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2
Q

List the functions of our muscles.

A
  • movement
  • stability
  • generates heat
  • additional functions
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3
Q

Descirbe muscle movement.

A
  • Muscles, attatched to bones by tendons, contract to move our body.
  • facial expressions, lovomotion, peristalsis, etc.
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4
Q

Describe muscle stability.

A
  • maintains posure against gravity

- stabilizes joints

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5
Q

How do muscles generate heat?

A

ATP powers muscle contraction, energy is lost as heat.

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6
Q

What are the additional functions of muscles?

A
  • protects organs

- regulates the passage of substances (dilate and constrict).

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7
Q

What are the three types of muscles?

A

1) Skeletal
2) Cardian
3) Smooth

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8
Q

How do muscle tissues differ?

A

Muscle tissues differ in:

  • their cells structure
  • body location
  • how they are stimulated to contract
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9
Q

What is the skeletal muscle attatched to?

A

the skeleton

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10
Q

Is the skeletal muscle voluntary or involuntary movement? What can it be?

A
  • voluntary

- can be reflexive

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11
Q

What do the cells look like? (Skeletal Muscle).

A

Long, cylindrical, multinucleated cells (largest type).

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12
Q

Do skeletal muscles respond quickly or slowly? Do they tire quickly?

A
  • quickly

- tire easily

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13
Q

____of fibers bundled together by____ _____ to make a _____.

A
  • thousands
  • connective
  • tissue
  • fascicle
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14
Q

Many fascicles make up a ____?

A

muscle

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15
Q

Do smooth muscles have voluntary or involuntary movements?

A

involuntary

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16
Q

Where are smooth muscles found? Give examples.

A
  • found mainly in walls of hollow, visceral orga

- such as the stomach, bladder, respiratory passages, etc.

17
Q

Smooth muscles line____in the body?

A

pathways

Ex. esophagus

18
Q

Are smooth muscles a single or multiple nucleus?

A

single

19
Q

How many types of smooth muscle are there?

A
  • 2 types

- circular and longitudinal

20
Q

How do smooth muscles contract?

A

Alternatively contract the change size and shape of organ.

21
Q

Where are cardiac muscles found?

A

The heart

22
Q

Are cardiac muscles voluntary or involuntary in their movements?

A

involuntary

23
Q

Are cardiac muscles single or double nucleus?

A

single

24
Q

What is the shape of a cardia muscle?

A

spiral or figure 8 shape.

25
Q

What does contraction of a cardiac muscle cause?

A

The chambers in the heart ot be smaller.

26
Q

What is the contraction of a cardiac muscle controlled by?

A

a pacemaker in the heart.

27
Q

Direction of fibre?

A
  • rectus (straight)

- oblique (at a slant)

28
Q

Relative size of muscle?

A
  • maximus (largest)
  • minimus (smallest)
  • longus (long)
29
Q

Location of muscle?

A

named for bone association

30
Q

Number of origins?

A

*attatchment to immovable bone
> bi-
> tri-
> quad-

31
Q

Shape of muscle?

A

-deltoid (triangular)

32
Q

Action of muscle?

A
  • felxor
  • extensor (vastus)
  • adductor (toward centre of body)
33
Q

Location of muscles origin and insertion?

A

-attatchment to moveable bone.

34
Q

Thorax?

A
  • Pectoralis (major and minor)
  • Rhomboids
  • Lattissimus Dorsi
35
Q

Abdominal?

A
  • Rectus Adbominals
  • External Oblique
  • Internal Oblique
  • Transverse Abdominals
36
Q

Shoulders?

A
  • Trapezius

- Deltoid

37
Q

Arm?

A
  • Triceps Brachii

- Biceps Brachii

38
Q

Leg?

A
  • Gluteus (maximus, medius, minimus)
  • Hamstrings
  • Gastrocnemius
  • Soleus

HS (18 decks)

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