TOPIC 3 - GENERAL MYOLOGY Flashcards
Branch of gross and comparative anatomy which deals with muscles
Myology
Made up of contractile tissues responsible for locomotion and other body movements
Muscular system
It is a type of muscle that is striated and voluntary.
Skeletal muscle
It is a type of muscle that is striated and involuntary.
Cardiac muscle
It is a type of muscle that is non-striated and involuntary.
Smooth muscle
This fibroconnective structure covers entire muscle.
Epimysium
This fibroconnective tissue covers individual muscle fibers.
Perimysium
This fibroconnective tissue covers individual muscle fibers/myofibrils.
Endomysium
It is the study of muscle movements.
Kinesiology
Muscle that moves a part toward the midline
Adductor
Muscles that move a part away from the midline
Abductor
Muscles that bend a limb at its joint or decreases joint angle
Flexor
Muscles that straighten a limb or increases the joint angle
Extensor
Muscles that raises or elevates a body part
Levator
Muscles that lowers or depresses a body part
Depressor
Muscles that turn a body part on its axis
Rotator
Muscles that rotates the palmar or plantar aspect upward
Supinator
Muscles that rotates the palmar or plantar downard
Pronator
Functional groupings of muscles: Muscle directly responsible for a desired body action or movement.
Prime movers
Functional grouping of muscles: Muscle supporting the action of an antagonist.
Synergist
Functional grouping of muscles: Muscle opposing a desired action.
Antagonist
Arrangement of muscle fibers: Origin has same size/dimension as with the insertion.
Parallel
Give an example of a parallel muscle.
Latissimus dorsi
Arrangement of muscle fibers: The origin and insertion are tapering, thus creating a leaf-shaped muscle.
Fusiform
Give an example of fusiform muscle.
Rectus thoracis
Biceps
Arrangement of muscle fibers: A muscle with 1 origin and 1 insertion.
Unipennate
Few of the muscles are unipennate. True or False?
False, most of the muscles.
Arrangement of muscle fibers: A muscle with 1 origin and 2 insertions.
Bipennate
Give an example of bipennate muscle.
Rectus femoris
Caninus
Arrangement of muscle fibers: A muscle with 1 origin and 3 or more insertions.
Multipennate
Give an example of multipennate muscle.
Deltoideus
Multifudus muscles
Give the 5 principal functions of muscles.
- Movement of skeletal framework
- Contraction/beating of heart
- Peristalsis
- Skin hair erection
- Eyeball movement
This muscle is responsible for erection of skin hairs.
Arrector pili muscle
Superior oblique is situated at what topography?
Caudodorsal
Inferior oblique is situated at what topography?
Caudoventral
Give the muscles responsible for eyeball movement.
1, Superior oblique
2. Inferior oblique
3. Dorsal rectus
4. Ventral rectus
5. Lateral rectus
6. Medial rectus
7. Retractor bulbi
Among the muscles responsible for eyeball movement, which is/are considered or also known as straight muscles?
- Lateral rectus
- Medial rectus
- Ventral rectus
- Dorsal rectus
Arrangement of muscle fibers: Has broad origin and single tendon for insertion
Convergent
Arrangement of muscle fibers: Muscle is round-shaped and surrounds body pats opening.
Circular
Give an example of circular muscle.
Orbicularis oculi
Functional groupings of muscles: Muscle that holds scapula firmly in place.
Fixator