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Anatomy > Lecture Exam 1 - Trunk Muscles > Flashcards

Lecture Exam 1 - Trunk Muscles Flashcards

1
Q

Muscle contraction always occurs at…

A

the joint

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2
Q

The muscle types are… (3)

A

Skeletal, Smooth, Cardiac

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3
Q

Skeletal muscles are…

A

striated and voluntary

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4
Q

Smooth muscles… and are…

A

lack striations and are involuntary

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5
Q

Cardiac muscles are ___, ___, and ___

A

striated, branched, and involuntary

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6
Q

Cardiac muscles continuously…

A

contract

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7
Q

The functions of muscles are… (4)

A

Heat, Stability, Movement, and Control of body opening

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8
Q

Skeletal Muscles attach to ___ via ___ or ___

A

Attach to bone via tendons or aponeuroses

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9
Q

The origin or skeletal muscles are…

A

stationary

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10
Q

The insertion of skeletal muscles are…

A

mobile

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11
Q

The belly of skeletal muscles consist of…

A

muscle mass

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12
Q

The functions of muscles are… (4)

A

Heat, Stability, Movement, Control of body opening

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13
Q

The architecture of muscles are… (4)

A

Parallel, Pennate, Circular, Triangular

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14
Q

Pennate means…

A

Bilaterally symmetrical

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15
Q

The muscles of the trunk are… (2)

A

Epaxial muscles and Hypaxial muscles

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16
Q

Epaxial muscles are if the muscle is… (relative position) with (relative position) rami

A

if the muscle is dorsal to the transverse processes, posterior rami

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17
Q

Hypaxial muscles are if the muscle is… (relative position) with (relative position) rami

A

if the muscle is ventral the transverse processes, anterior rami

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18
Q

Innervation is…

A

the association between the nerve and the organ

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19
Q

Ramus refers to…

A

a branch

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20
Q

The NON-Trunk muscles are… (2)

A

Trapezius and Latissimus dorsi

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21
Q

Trapezius muscles move…

A

the head/neck and scapula

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22
Q

Latissimus dorsi muscles move…

A

the arm

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23
Q

Trunk muscles move the…

A

trunk

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24
Q

Non-trunk muscles aren’t trunk muscles because they’re… and innervated by… instead of…

A

they’re derived from pharyngeal arches and innervated by different nerves instead of being derived from somites

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25
Non-trunk muscles are visible as... over the...
covering muscles over the trunk muscles
26
Epaxial muscles all occur where?
in the midline of your back
27
The epaxial muscles are... (6)
Splenius, Ilicostalis, Longissimus, Spinalis, Semispinalis, and Multifidus
28
Splenius muscles have __ parts to it, which are...
two parts to it, cervical and one that connects it to the head
29
“Capitis” means...
if a slip of muscle attaches to the head
30
“Cervicis” means...
if a slip of muscle attaches to the cervical vertebrae
31
“Thoracis” means...
if a slip of muscle attaches to the thoracic vertebrae
32
The actions of Epaxial Muscle are... (2)
Unilateral and Bilateral
33
The Superficial intrinsic (epaxial) muscles are... (2)
Splenius capitis and Splenius cervicis
34
The Superficial epaxial muscles (Erector spinae) are... (3)
Ilicostalis, Longissimus, and Spinalis
35
Superficial epaxial muscles can also be called...
Erector spinae
36
Intermediate muscles can also be referred to as...
transversospinalis
37
The Intermediate muscles are... (2)
Semispinalis and Multifidus
38
The Semispinalis muscles include the... (3)
Thoracis, cervicis, and capitis
39
Multifidus muscles are...
Really deep muscles
40
The layers/groups of the hypaxial muscles are... (4)
External, Internal, Transverse, andCranial-causal (Rectus)
41
The Cranial-causal layer/group is also referred to as the...
Rectus
42
The function of anterior Abdominal muscles is to...
compress and support abdominal viscera, flex and rotate trunk
43
The insertion of the External Oblique, Internal Oblique, and Transversus abdominis muscles is at the...
Linea alba
44
The anterior Abdominal muscles include the... (4)
External Oblique, Internal Oblique, Transversus abdominis, and Rectus abdominus
45
Tendinous intersections are at the...
Rectus abdominis
46
There are __ or __ tendinous intersections
3 or 4
47
Rectus sheath covers the ____ muscles (relative position), meeting ____ and forming the ____
Rectus abdominus muscles anteriorly and posteriorly, meeting in the middle and forming the linea alba
48
The Rectus sheath is formed from...
Aponeuroses
49
Aponeurosis is the... formed when...
sheet of tendinous material formed when a muscle effectively inserts into another muscle
50
What is the relation to the linea alba and pregnancy?
Becomes darker with pregnancy
51
The Linea nigra is a... (what/where)
line below belly button
52
The linea alba is formed from the... that covers...
rectus sheath that covers the rectus abdominus
53
The Inguinal Ligament are what kind of rings?
Deep inguinal and Superficial inguinal ring
54
The Superficial inguinal ring is (relative position to body)
Closer to the surface of the body
55
The posterior Abdominal Muscles include... (5)
Quadratus lumborum, External intercostal, Internal intercostal, Innermost intercostal, and the Transversus thoracis
56
External intercostal muscles... (function) | They have the same fiber directions as the ___ muscle
Elevates ribs during inspiration | Same as external oblique muscle
57
Internal intercostal muscles... (function) | They have the same fiber directions as the ___ muscle
Depresses ribs during expiration | Same as the oblique muscle
58
Innermost intercostal muscles... (presumed function) | These muscles specifically are found around how much of the body?
Presumed to be the same as internal intercostal muscles | Goes about ¾ around the body
59
``` Transversus thoracis muscles... (function) Orientation is (opposite/the same as) to the ___ muscle ```
Depresses ribs during expiration | Orientation is opposite to the transversus abdominis muscle
60
Describe the sternalis
not everyone has it, in different organisms its needed
61
The Hypaxial muscles of the Pelvic Body Wall include the... (2)
Coccygeus muscle, Levator ani muscle
62
Levator means...
elevates
63
The function of the Levator ani muscle is to...
Keep the rectum from falling out of the body
64
The function of the Pelvic diaphragm is to...
Keep everything from falling out of the bottom of the body
65
The functions of the PELVIC Body Wall Muscles are... (3)
* Support pelvic viscera * Raise pelvic floor to help compress abdomen during vomiting, coughing, sneezing, etc. * Raise anal canal during defecation (shit)

Anatomy (12 decks)

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