Applied Science and Anatomy Flashcards

The rotator cuff consists of four muscles; which one is responsible for internal rotation of the humerus?

Answer: Subscapularis

The subscapularis originates on the anterior scapula and is the only rotator cuff muscle that internally rotates the humerus.

Which anatomical plane divides the body into superior and inferior portions?

Answer: Transverse (horizontal) plane

The transverse (horizontal) plane divides the body into upper (superior) and lower (inferior) sections.

Which type of connective tissue forms tendons and ligaments?

Answer: Dense regular connective tissue

Dense regular connective tissue has collagen fibers arranged in parallel bundles, giving tendons and ligaments great tensile strength in one direction.

What is the scientific term for the 'knee cap'?

Answer: Patella

The patella is a sesamoid bone embedded in the quadriceps tendon that protects the knee joint and improves mechanical advantage.

Which cranial nerve is responsible for the sensation of touch on the face?

Answer: Trigeminal nerve (CN V)

The trigeminal nerve (CN V) provides sensory innervation to the face through its ophthalmic, maxillary, and mandibular branches.

Which process describes the movement of a limb away from the midline of the body?

Answer: Abduction

Abduction is movement away from the body's midline, such as lifting the arm laterally away from the side of the body.

The sinoatrial (SA) node, which initiates the cardiac cycle, is located in which heart chamber?

Answer: Right atrium

The SA node is located in the posterior wall of the right atrium near the entrance of the superior vena cava and generates the heart's electrical impulse.