Attempting to pick up an object too heavy to lift would result in which type of muscle contraction?
Isotonic
Flaccid
Treppe
Isometric
The Correct Answer is D
A. Isotonic: In an isotonic contraction, the muscle changes length to move a load. If the object is too heavy to lift, no movement occurs.
B. Flaccid: Flaccid refers to a lack of muscle tone (limpness), which is not the state of a muscle trying to lift a heavy weight.
C. Treppe: Treppe (the "staircase effect") refers to an increase in the force of contraction when a muscle is stimulated repeatedly after relaxation.
D. Isometric: An isometric contraction occurs when tension increases in the muscle, but the muscle does not shorten because the load is too great to move.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Sternocleidomastoid and abdominal muscles: The sternocleidomastoid is an accessory muscle for forced inspiration, not expiration.
B. Sternocleidomastoid and intercostals: Again, the sternocleidomastoid helps lift the ribcage for inhalation.
C. External intercostals and pectoralis muscles: Both of these are used to expand the chest cavity during inspiration.
D. Abdominal muscles and internal intercostals: Forced expiration is an active process where abdominal muscles push the diaphragm up and internal intercostals pull the ribs down to force air out.
Correct Answer is A
Explanation
A. osteoblasts: These are the bone-forming cells that actively produce and secrete the organic bone matrix.
B. osteocytes: These are mature bone cells that maintain the matrix but are no longer responsible for producing it.
C. osteoclasts: These cells break down or "resorb" bone tissue.
D. chondrocytes: These cells produce the matrix for cartilage, not bone.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.