MBLEx Domain 1: Anatomy and Physiology

Which of the following muscles is primarily responsible for the dorsiflexion of the foot at the ankle joint?

The deltoid muscle is innervated by which of the following nerves?

Which layer of the heart wall contains striated muscle fibers and is responsible for the heart's contractile activity?

The action potential in a neuron propagates in one direction due to which of the following reasons?

In the context of joint movements, what is the term used to describe the movement that decreases the angle between the bones of the joint?

Which type of joint is characterized by a fluid-filled joint capsule and the presence of articular cartilage?

The blood-brain barrier 'BBB' is primarily formed by the tight junctions between which type of cells?

What is the primary function of the sarcoplasmic reticulum in muscle cells?

The tricuspid valve is located between which two chambers of the heart?

Which hormone is primarily responsible for the regulation of calcium levels in the blood?

The Krebs cycle occurs in which part of the cell?

What is the term used to describe the process by which bone is formed, renewed, and repaired in the human body?

The Haversian system, critical for the nourishment and maintenance of bone tissue, is found in which type of bone?

Which gland is responsible for the regulation of circadian rhythms through the hormone melatonin?

In the human body, the conversion of ammonia to urea occurs primarily in which organ?

Which of the following is a characteristic feature of slow-twitch muscle fibers?

The superior vena cava is responsible for returning deoxygenated blood to the heart from which part of the body?

The primary auditory cortex, responsible for processing auditory information, is located in which lobe of the brain?

Which of the following blood vessels carries oxygenated blood from the lungs to the heart?

The release of which hormone is primarily involved in the body's response to stress, often referred to as the "fight or flight" response?