Muscles

Muscle Histology

100

What makes up a triad?

Two terminal cisternae of the sarcoplasmic reticulum and a transverse (t-tubule) from the sarcolemma

200

What enzyme degrades acetylcholine in the synaptic cleft?

Acetylcholinesterase

300

Influx of which ion prompts exocytosis of acetylcholine?

Calcium

400

In which type of contraction is the tension changing, but the length of the muscle remains the same?

Isometric

500

Cross bridge cycling would not be possible without the presence of this organic molecule

ATP

Head and Neck

100

Which muscle originates from the Occipital bone and mastoid process of temporal bone and inserts onto the epicranial aponeurosis (galea aponeurotica)?

Occipitalis (occipital belly) of Epicranius

200

Which muscle originates from the zygomatic bone and inserts onto the lateral corners of the lip and fibers of orbicularis oris?

Zygomaticus major

300

Which muscle originates from the Maxilla and zygomatic arch and inserts into the ramus and body of the mandible?

Masseter

400

Which muscle originates from the manubrium of sternum and the clavicle and inserts onto the mastoid process of the temporal bone and superior nuchal line of the occiput?

Sternocleidomastoid

500

What are the four suprahyoid muscles?

Geniohyoid, mylohyoid, digastric, stylohoid

Torso

100

Which muscles originate from the Superior border of rib below and insert into the inferior border of the rib above?

Internal intercostals

200

Which muscle originates on Ribs 5–12 and inserts onto the iliac crest and linea alba?

External abdominal oblique

300

Which muscle originates on the Xiphoid process of sternum, costal cartilages and adjacent portions of ribs 7–12, lumbar vertebrae and their intervertebral discs and inserts onto the central tendon?

Diaphragm

400

Which muscle originates from the Iliac crest and iliolumbar ligament and inserts into L1-L4 and the inferior border of rib 12?

Quadratus lumborum

500

What are the three muscles that form the erector spinae?

Iliocostalis, longissimus, spinalis

Upper Extremity

100

Which muscle originates from the Superior nuchal line of occipital bone, ligamentum nuchae, and spines of C7–T12 and inserts onto the Clavicle, acromion, and spine of scapula?

Trapezius

200

Which muscle originates from Spines of T2–T5 and inserts onto the Vertebral border of scapula inferior to spine? 

Rhomboid major

300

Which muscle originates from the Inferior angle of scapula and inserts onto the intertubercular sulcus?

Teres major

400

Which muscle originates on the Subscapular fossa of scapula and inserts onto the lesser tubercle of the humerus?

Subscapularis

500

Which muscle originates from the medial epicondyle of the humerus and inserts onto the middle phalanx of digits 2 - 5?

Flexor digitorum superficialis

Lower Extremity

100

Which muscle originates from the pubic crest and symphysis and inserts onto the linea aspera of the femur

Adductor longus

200

Which muscle originates from the iliac crest, sacrum, coccyx, and sacrospinal aponeurosis?

Gluteus maximus

300

Which muscle originates from the superior pubic ramus and inserts onto the pectineal line of the femur?

Pectineus

400

Which muscle originates on the fibula and inserts onto the distal phalanx of the great toe?

Extensor hallucis longus

500

Which muscle originates from the fibula, tibia, and interosseous membrane and inserts onto metatarsals II - IV, the cuneiforms, and the navicular?

Tibialis posterior