Musculo 1

Which muscle below is NOT a member of rotator cuff muscles (SITS muscles)?

• subscapularis

• Infraspinatus

• Teres major

• Supraspinatus

slow relaxation of muscle is known as

• myokinesia

• myotonia

• muslce spasm

• muscular dystrophy

The parents of a 3-year-old boy complain that their child has a high fever, sore throat, and hoarse voice. On physical examination, the child’s epiglottis appears swollen and erythematous. The boy is diagnosed with acute bacterial epiglottitis. In considering this case, you recall that the epiglottis at the entrance to the larynx is composed primarily of which of the following types of connective tissue?

• Dense, irregular connective tissue

• Elastic cartilage

• Dense, regular connective tissue

• Fibrocartilage

an isotonic contraction differs from an isometric contraction in that in isotonic contraction

• heat of activation is greater

• muscle is less efficient

• external work is done

• recovery heat is reduced

muscle fatigue is due to

• slow contraction of a muscle

• inadequate supply of ATP

• low ATPase activity

• long latency

a patient complain of muscle weakness. On administration of neostigmine it disappears due to

• it blocks action of acetylcholine

• it acts by persistent depolarization of motor end plate

• it interferes with action of anticholine esterase

• it competes with Ach for receptors on motor end plate

A 55-year-old woman has severe pain in the joint area. Arthritis has been diagnosed. Which type of cyclooxygenase is activated during arthritis?

• COX-3

• COX-2

• COX-4

• COX-1

Which combination below is INCORRECT?

• rochlea – spool-like articular process or process that acts as a pulley

• Foramen – passage through a bone

• Condyle – ridge of bone

• Fossa – hollow or depressed area

A 45-year-old woman has a traumatic injury to the cartilage tissue. The extracellular matrix is damaged. Which of the following components is not representative of the extracellular matrix?

• Collagen

• Adhesive proteins

• Proteoglycanes

• Chondrocytes

A 3-year-old boy was diagnosed with rickets. Has uneven bone development. Risk of fractures. Which vitamin deficiency causes this disease?

• Vitamin E

• Vitamin K

• Vitamin D

• Vitamin A