1Connective Tissue covering a fasicle and/or a bundle of muscle fibers
Perimysium
2Bundle of muscle fibers
Fascicle
3A muscle cell
Muscle fiber
4Thin areolar connective tissue surrounding each muscle fiber
endomysium
5Plasma membrane of the Muscle fiber
Sarcolemma
6a long organelle with a banded appearance found within muscle cells
myofibril
7actin or myosin containing structure
myofilamint
8Cord of collagen fibers that attaches a muscle to bone
tendon
9What are the three reasons the connective tissue sheaths of skeletal muscle are important?
Support + protection, allow passage for nerves and vascular structures, keeps everything together
10What is the neurotransmitter of the Neuromuscular junction?
acetylcholine
11Lateral Pterygoid (Movement and Origin)
Protracts mandible (anteriorly), greater wing of sphenoid bone
12Medial Pterygoid (Movement and Insertion)
Synergistic of Temporalis, medial mandible
13Buccinator (Movement and Insertion)
Compresses the cheek, Orbicularis Oris
14Temporalis (Movement and Insertion)
Supporting Jaw Closure, coronoid process of mandible
15Connective Tissue covering a fasicle and/or a bundle of muscle fibers
Perimysium
16Protective Connective tissue surrounding an entire muscle
Epimysium
17How does Botulinum toxin alter the neuromuscular junction to result in paralysis?
Botulinum toxin inhibits the release of Acetylcholine into the synaptic cleft via vesicle formation
18Convergent Fasicle arrangement
A fan shape arrangement with a single attachment point
19Connective Tissue covering a fasicle and/or a bundle of muscle fibers
Perimysium
20Fusiform Fascicle arrangement
powerful muscles with parallel arrangement to tendons
21Parallel Fasicle arrangment
thin and weaker muscles with parallel arrangement
22Multipennate Fascicle arrangmenet
multiple varying (almost) parallel arrangements
23Bipennate Fasicle arrangement
Two varying (almost) parallel arrangments
24Unipennate Fasicle arrangmenet
Fasicles on one side of the tendon and are almost parallel
25Superior Oblique (function)
Depresses eye and turns it laterally
26Inferior rectus (function)
Depresses eye and turns it medially
27Superior Rectus (function)
elevates eye and turns it medially
28Medial Rectus
Moves eye medially
29Inferior Oblique
Elevates eye and turns it laterally
30Which muscles contract during Bruxism (grinding teeth in sleep)
Massater, Temporalis, Medial Pterygoid, Lateral Pterygoid
31External Intercostal [more posterior] (function)
Pulls ribs towards one another, aids inspiration
32Internal Intercostal [more anterior] (function)
Draws ribs together to depress rib cage
33Diaphragm (function)
Primary mover of inspiration (contraction = inhalation)
34Quadratus Lumborum (movement and origin)
Flexes vertebral column laterally, Iliac crest and lumbar fascia
35Obicularis oculi (movement and insertion)
closes eye, skin of eyelid
36Zygomaticus (Movement and origin)
Raises corner of mouth, zygomatic bone)
37Orbicularis Oris (movement and origin)
closes lips, maxilla and mandible
38Occipital belly (movement and origin)
Fixes aponeurosis/pulls scalp, occipital & temporal bones
39Which four muscles are commonly used for intramuscular injections?
Gluteus Maximus, Gluteus medius, vastas lateralis, and the Deltoids
40Which insertion tendon houses the patella?
the Quadracep Rectus Femoris
41Which group of muscles have a single insertion tendon in the calcaneus (heel)
Triceps Surae (Medial Gastrocnemius, Lateral Gastrocnemius and Soleus)
42Where does the bulk of muscle tissue lie in relation to the part of the body it moves?
The bulk of muscle tissue is proximal to the part that moves (bicep is proximal to forearm)
43Where are most flexor muscles located in relation to the body?
most flexor muscles are anterior
44Where are most extensor muscles located in relation to the body?
most extensor muscles are posterior
45Which joint is the exception to the flexor/extensor generalizations
the Knee joint (Femur, Tibia and Fibula)
46Sternocleidomastoid (Movement and origin)
Hand flexion, manubrium and clavicle
47External Oblique (movement and origin)
flex vertebral column and compress abdomin, anterior of lower ribs
48Rectus Abdominus (movement and insertion)
Flexes Vertebral column, xiphoid process
49Internal Oblique (movement and origin)
External oblique synergist, Lumbar fascia and iliac crest
50Transverse Abdominus (movement and insertion)
Compresses abdominal contents, linea alba and pubic crest
51Erector Spinae (movement and insertion)
Extend and flex the vertebral column laterally, Ribs + transverse processes
52Quadratus Lumborum (movement and origin)
Flexes vertebral column laterally, Iliac crest and lumbar fascia