Biology Anatomy and Physiology Flashcards

Which type of muscle tissue is found in the walls of hollow organs such as the stomach and bladder?

Answer: Smooth muscle

Smooth muscle is involuntary and lines hollow organs, controlling movements like peristalsis and urination.

What is the primary function of the lymphatic system?

Answer: Return interstitial fluid to the bloodstream

The lymphatic system collects excess interstitial fluid and returns it to venous circulation, also playing a key role in immunity.

Which bone marking is a rounded projection that articulates with another bone, forming a joint?

Answer: Condyle

A condyle is a smooth, rounded articular surface at the end of a bone that forms part of a synovial joint.

The sinoatrial (SA) node is located in which chamber of the heart?

Answer: Right atrium

The SA node, the heart's natural pacemaker, is embedded in the posterior wall of the right atrium near the opening of the superior vena cava.

Which layer of the skin contains sweat glands, hair follicles, and blood vessels?

Answer: Dermis

The dermis is the thick middle layer of skin housing glands, follicles, sensory receptors, and vascular networks.

What term describes the movement of a body part away from the midline of the body?

Answer: Abduction

Abduction moves a limb or part laterally away from the body's midline, as when raising an arm to the side.

Which organelle is responsible for producing ATP through cellular respiration?

Answer: Mitochondrion

Mitochondria carry out oxidative phosphorylation to generate the majority of a cell's ATP supply.