Muscular System Flashcards
(37 cards)
Tendon connects what to what
A. muscle to bone
B. muscle to muscle
C. bone to bone.
A. Connects muscle to bone (Achille tendon - Heel bone to calf muscle)
Ligament connect what to what
A. Holds muscle to bone together
B. Holds muscle to muscle together
C. Holds bone to bone together
C. Hold bone to bone together
Actin contains the connection site for “X” during muscular contraction:
A. Troponin
B. Tropomyosin
C. Thin Filaments
D. Myosin
D. Myosin
“X” attaches to “Y” to move tropomyosin out of the way, revealing Actin’s binding site:
A. Sodium, Actin
B. Calcium, Troponin
C. Potassium, Myosin
D. Sodium, Myosin Head
B. Calcium, Troponin
Thick filaments are composed of:
A. Troponin
B. Tropomyosin
C. Actin
D. Myosin
D. Myosin
Masseter
Jaw muscle, chewing
Frontalis
Forehead muscle, elevates eyebrow
What is the neurotransmitter responsible for stimulating skeletal muscle tissue to contract?
A. Gamma-aminobutyric acid (GABA)
B. Histamine
C. Norepinephrine
D. Acetylcholine
D. Acetylcholine
Why does skeletal muscle become fatigued?
A. Norepinephrine fatigue
B. Fuel shortage (ATP) and Lactic Acid build-up
C. Acetylcholine shortage
D. Histamine build up causing depression in neuromuscular conduction
B. Fuel shortage (ATP) and Lactic Acid build-up
The rest of the cards are references to muscles if you want to continue. If not skip to the next section.
The rest of the cards are references to muscles if you want to continue. If not skip to the next section.
Sternocleidomastoid
base of ear to clavicle, rotate and flex the head
Zygomaticus major
from cheekbone to corner of mouth, to raise corner of mouth.
Orbicularis oris
circular muscle around the mouth, close the mouth
Orbicularis oculi
Circular muscle around the eye, close eye
Rectus abdominis
“ABS”, flex and compress torso
Rectus Sheath
Thin covering of rectus abdominis
External oblique
Muscle on lateral sides of torso, flex and rotate vertebral column, compress abdomen
Serratus anterior
On the 1st-8th ribs, protract the scapula
Pectoralis major
Chest muscles, flex, extend and adduct the arm
Trapezius
Back/shoulder muscle alond spine, retract, elevate and depress the scapulae.
Latissimus dorsi
Back of ribs to lower back, extend the arm, adduct the arm
Deltoid
Tops of shoulders, flex, extend and abduct the arm
Biceps brachii
Tops of arm, flex arm and forearm
Triceps Brachii
Back of arm, extend arm and forearm
