muscles & actions Flashcards
1
Q
What tissue
A
Skeletal muscle
2
Q
What tissue
A
Cardiac muscle
3
Q
What structure
A
Intercalated disc
4
Q
What tissue
A
Smooth muscle
5
Q
What muscle
A
Frontalis
6
Q
What action
A
Elevates eyebrows; wrinkles forehead
Frontalis
7
Q
What muscle
A
Occipitalis
8
Q
What action
A
Draws scalp back (posteriorly)
Occipitalis
9
Q
What muscle
A
Orbicularis oculi
10
Q
What action
A
Closes eyes
Orbicularis oculi
11
Q
What muscle
A
Orbicularis oris
12
Q
What action
A
Closes and protrudes lips
Orbicularis oris
13
Q
What muscle
A
Mentalis
14
Q
What action
A
Protrudes lower lip and chin for drinking and “doubtful” expression
Mentalis
15
Q
What muscle
A
Buccinator (under various superficial muscles)
16
Q
What muscle
A
Buccinator (superficial muscles removed)
17
Q
What action
A
Compresses cheek (to produce a sucking motion)
Buccinator
18
Q
What muscle
A
Platysma
19
Q
What action
A
Depresses mandible; tenses skin of neck
Platysma
20
Q
What muscle
A
Masseter
21
Q
What action
A
Elevates mandible
Masseter
22
Q
What muscle
A
Temporalis
23
Q
What action
A
Elevates and retracts mandible
Temporalis
24
Q
What muscle
A
Superior rectus
25
What action
Rolls eyeball up
Superior rectus
26
What muscle
Inferior rectus
27
Muscle action
Rolls eyeball down
Inferior rectus
28
What muscle
Medial rectus
29
Muscle action
Rolls eyeball inward
Medial rectus
30
What muscle
Lateral rectus
31
What action
Rolls eyeball outward
Lateral rectus
32
What muscle
Superior oblique
33
What action
Rolls eyeball inferiorly and laterally (rolls eye down and out)
Superior oblique
34
What muscle
Inferior oblique
35
What action
Rolls eyeball superiorly and laterally (rolls eye up and outward)
Inferior oblique
36
What muscle
Digastric (anterior and posterior belly)
37
What action
Depresses mandible (to open mouth); fixates hyoid during swallowing
Digastric
38
What muscle
Mylohyoid
39
What action
Elevates hyoid and floor of mouth (pushes food toward pharynx [throat])
Mylohyoid
40
What muscle
Stylohyoid
41
What action
Elevates and retracts hyoid and floor of mouth during swallowing
Stylohyoid
42
What muscle
Sternohyoid
43
What action
Depresses hyoid and larynx
Sternohyoid
44
What muscle
Omohyoid
45
What action
Depresses and retracts hyoid
Omohyoid
46
What muscle
Omohyoid ( superior and inferior belly) (with sternocleidomastoid removed)
47
What action
Depresses and retracts hyoid
Omohyoid
48
What muscle
Sternothyroid
49
What action
Depresses hyoid and thyroid cartilage (part of larynx)
Sternothyroid
50
What muscle
Sternocleidomastoid
51
What muscle
Sternocleidomastoid
52
What action
Flexes and rotates head (as in saying yes and saying no)
Sternocleidomastoid
53
What muscle
Trapezium
54
What action
Elevates, depresses, retracts, and superiorly rotates scapula
Trapezium
55
What muscle
Levator scapulae
56
What action
Elevates scapula
Levator scapulae
57
What muscle
Pectoralis minor
58
What action
Protracts and depresses scapula and elevates ribs
Pectoralis minor
59
What muscle
Serratus anterior
(with pectoralis major showing)
60
What muscle
Serratus anterior
(with pectoralis major removed and pectoralis minor showing)
61
What action
Protracts superiorly rotates scapula; also elevates ribs when scapula is fixed
Serratus anterior
62
What muscle
Pectoralis major
63
What action
Flexes, adducts, and medially rotates arm
Pectoralis major
64
What muscle
Deltoid
65
What muscle
Deltoid
66
What action
Abducts arm; secondarily flexes and extends arm
Deltoid
67
What muscle
Coracobrachialis
68
What action
Flexes and adducts arm
Coracobrachalis
69
What muscle
Latissimus doris
70
What action
Adducts, extends, and medially rotates arm
Latissimus doris
71
What muscle
Supraspinatus
(trapezius removed)
72
What muscle
Supraspinatus
73
What action
Abducts arm
Supraspinatus
74
What muscle
Infraspinatus
(Trapezius removed)
75
What muscle
Infraspinatus
(trapezius and deltoid removed)
76
What action
Laterally rotates humerus
Infraspinatus
77
What muscle
Teres major
78
What muscle
Teres major
(deltoid removed)
79
What action
Adducts, extends, and medially rotates arm
Teres major
80
What muscle
Teres minor
81
What muscle
Teres minor (deltoid removed)
82
What action
Laterally rotates humerus
Teres minor
83
What muscle
Biceps brachii
84
What action
Flexes and supinates forearm
Biceps brachii
85
What muscle
Brachialis
86
What action
Flexes forearm
Brachialis
87
What muscle
Brachioradialis
88
What action
Flexes forearm
Brachioradialis
89
What muscle
Triceps brachii
90
What muscle
Triceps brachii
91
What action
Extends forearm
Triceps Brachii
92
What muscle
Flexor carpi radialis
93
What action
Flexes and abducts hand
Flexor carpi radialis
94
What muscle
Palmaris longus
95
What action
Flexes hand
Palmaris longus
96
What muscle
Flexor carpi ulnaris
97
What muscle
Flexor Carpi UInaris
98
What action
Flexes and adducts hand
Flexor carpi ulnaris
99
What muscle
Extensor carpi ulnaris
100
What action
Extends and adducts hand
101
What muscle
Extensor digitorum (extensor digitorum communis)
102
What action
Extends fingers and hand
Extensor digitorum
103
What muscle
Extensor carpi radialis brevis
104
What action
Extends and abducts hand
Extensor carpi radialis brevis
105
What muscle
Extensor carpi radialis longus
106
What action
Extends and abducts hand
Extensor carpi radialis longus
107
What muscle
External oblique
108
What action
Compresses abdomen; flexes and laterally flexes trunk
External oblique
109
What muscle
Internal oblique
110
What action
Compresses abdomen; flexes and laterally flexes trunk
Internal oblique
111
What muscle
Transverse abdominis
112
What action
Compresses abdomen
Transverse abdominis
113
What muscle
Rectus abdominis
114
What action
Flexes trunk; compresses abdomen
Rectus abdominis
115
What muscle
External intercostals
116
What action
Elevates ribs (spreads ribs, assisting in inspiration [inhaling])
External intercostals
117
What muscle
Internal intercostals
118
What action
Depresses ribs
(pulls ribs closer together, assisting in expiration [exhaling])
Inernal intercostals
119
What muscle
Diaphragm
120
What muscle
Diaphragm
121
What action
Depresses floor of thorax (increases length of thorax, expanding its volume)
Diaphragm
122
What muscle
Gluteus maximus
123
What action
Extends thigh; abducts and laterally rotates thigh
Gluteus maximus
124
What muscle
Gluteus medius
125
What action
Abducts and medially rotates thigh
Gluteus medius
126
What muscle
Gluteus minimus
(with gluteus maximus removed)
127
What muscle
Gluteus minimus
(with gluteus maximus and medius removed)
128
What action
Abducts and medially rotates thigh
Gluteus minimus
129
What muscle
Piriformis
(with gluteus maximus and medius removed)
130
What action
Abducts and laterally rotates thigh
Piriformis
131
What muscle
Tensor fasciae latae
132
What muscle
Tensor fasciae latae
133
What action
Abducts, flexes and medially rotates thigh
Tensor fasciae latae
134
What muscle
iliacus
135
What muscle
iliacus
(with abdominal wall muscles removed)
136
What action
Flexes thigh
iliacus
137
What muscle
psoas major
138
What muscle
Psoas major
(with abdominal wall muscles removed)
139
What action
Flexes thigh; flexes and laterally flexes vertebral column
Psoas major
140
What muscle
Biceps femoris
141
What muscle
Biceps femoris
142
What action
Extends thigh and flexes leg
Biceps femoris
143
What muscle
Semitendinosus
144
What action
Extends thigh and flexes leg
Semitendinosus
145
What muscle
Semimembranosus
146
What action
Extends thigh and flexes leg
Semimembranosus
147
What muscle
Gracilis
(posterior view)
148
What muscle
Gracilis
149
What action
Adducts and medially rotates thigh; flexes leg
Gracilis
150
What muscle
Sartorius
151
What action
Flexes, abducts, and laterally rotates thigh; flexes leg
(used in crossing legs)
Sartorius
152
What muscle
Rectus femoris
153
What action
Flexes thigh and extends leg
Rectus femoris
154
What muscle
Vastus medialis
155
What muscle
Vastus medialis
(with rectus femoris removed)
156
What action
Extends leg
Vastus medialis
157
What muscle
Vastus lateralis
158
What action
Extends leg
Vastus lateralis
159
What muscle
Vastus intermedius
(with rectus femoris removed)
160
What action
Extends leg
Vastus intermedius
161
What muscle
Tibialis anterior
162
What action
Dorsiflexes and inverts foot
Tibialis anterior
163
What muscle
Soleus
(anterior view)
164
What action
Plantar flexes the foot
Soleus
165
What muscle
Gastrocnemius
(anterior view)
166
What muscle
Gastrocnemius
(posterior view)
167
What action
Plantar flexes the foot; flexes leg
Gastrocnemius
168
What muscle
Soleus
(posterior view with gastrocnemius showing)
169
What muscle
Soleus
(with gastrocnemius removed)
170
What action
Plantar flexes the foot
Soleus
171
What muscle
Tibialis posterior
(with gastrocnemius and soleus removed)
172
What action
Plantar flexes the foot; inverts foot
Tibialis posterior
173
What muscle
Flexor digitorum longus
(with gastrocnemius and soleus removed)
174
What action
Flexes the toes
Flexor digitorum longus
175
What muscle
Flexor hallucis longus
(with gastrocnemius and soleus removed)
176
What action
Flexes the great toe (hallux)
Flexor hallucis longus
177
What muscle
Fibularis longus
(with gastrocnemius and soleus removed)
178
What action
Plantar flexes and everts the foot
Fibularis longus
179
What muscle
Plantaris
180
What muscle
Plantaris
(with gastrocnemius removed)
181
What action
Plantar flexes the foot
Plantaris
182
What muscle
Popliteus
(with gastrocnemius removed)
183
What action
Flexes and rotates leg
Popliteus
184
What muscle
Fibularis brevis
185
What action
Plantar flexes and everts the foot
Fibularis brevis
186
What muscle
Fibularis longus
(lateral view)
187
What action
Plantar flexes and everts the foot
Fibularis longus
188
What muscle
Extensor hallucis longus
189
What muscle
Extensor hallucis longus
(with tibialis anterior removed)
190
What action
Extends the great toe (hallux); dorsiflexes foot
Extensor hallucis longus
191
What muscle
Extensor digitorum longus
192
What action
Extends the toes; dorsiflexes the foot
Extensor digitorum longus
193
What muscle
Extensor digitorum brevis
194
What action
Extends the toes
Extensor digitorum brevis
195
What muscle
Extensor hallucis brevis
196
What action
Extends the great toe (hallux)
Extensor hallucis brevis
197
What muscle
Abductor digiti minimi
198
What action
Flexes and abducts the little toe (5th toe)
199
What muscle
Abductor hallucis
200
What action
Abducts the great toe (hallux)
201
What muscle
Flexor digiti minimi brevis
202
What action
Flexes the little toe (5th toe)
Flexor digiti minimi brevis
203
What muscle
Flexor digitorum brevis
204
What action
Flexes the toe
Flexor digitorum brevis
205
What muscle
Flexor hallucis brevis
206
What action
Flexes the great toe (hallux)
Flexor hallucis brevis
207
What is sarcolemma
The cell membrane of a muscle fiber
