The Certified Biomedical Equipment Technician examination, commonly known as the CBET exam, is one of the most respected assessments for prospective healthcare workers. Success on this examination requires consistent and diligent study for months in advance.
The CBET exam covers the following content areas: anatomy and physiology (about 13% of the exam); public safety in the health care facility (about 17%); fundamentals of electricity, electronics, and solid-state devices (about 17%); medical equipment function and operation (about 26%); and medical equipment problem solving (about 27%). Within each of these content areas, there are several subjects that must be studied thoroughly. For instance, the anatomy and physiology content area includes questions on body systems, organs, blood, and terminology. The questions in this section of the CBET exam generally relate closely to the precise information required to perform as a biomedical equipment technician. In the public safety in the health care facility section, meanwhile, the questions center on the following areas: electrical, chemical, radiation hazards, biological, fire, and codes and standards. You will need to perform extensive research on the various and particular dangers relevant to practice as a biomedical equipment technician. As in the other areas of the examination, the questions have been tailored to the real issues confronting a practicing technician. The CBET exam was developed by the Association for the Advancement of Medical Instrumentation.
Free CBET Practice Test Questions
1. Which of the following is NOT part of the respiratory system?
B. Mitral valve
C. Alveolar sacs
2. Regarding the levels of biological organization: cell, tissue, organ, and organ system, which of the following pairings is correct?
A. Organ: skin
B. Tissue: heart
C. Organ system: blood
D. Cell: integumentary
3. Which of the following glands is both endocrine AND exocrine?
4. The right ventricle of the heart pumps blood through which of the following structures?
A. Pulmonary valve
B. Tricuspid valve
C. Bicuspid valve
D. Aortic valve
5. Which of the following is NOT true regarding the transport of oxygen in the blood?
A. Oxygen is carried by red blood cells
B. Oxygen is attached to hemoglobin
C. Oxygen is dissolved physically in the liquid components of blood
D. Normally, most of the oxygen in blood is unloaded in body tissues
CBET Exam Medical Device Currents
1. B: The upper part of the respiratory system includes the nasal and oral cavities, the epiglottis, the pharynx and larynx, which includes the vocal cords. After passing through the larynx, air moves down through the trachea and from there to the left and right bronchi, each of which divides into several branches, which themselves divide ultimately into bronchioles, finally leading air into alveolar sacs consisting of alveoli, where gas exchange takes place. Also known as the bicuspid valve, the mitral valve is located between the left atrium and left ventricle in the heart, which is part of the circulatory system.
2. A: Tissue consists of cells of a particular type. The main four types are epithelial, connective, muscle, and nerve cells. An organ is a functional entity made up of at least two different tissue types, specialized for different functions within the organ. Including, epithelial, connective, nerve, and muscle tissue, the skin constitutes an organ, as does the heart. The name of the organ system to which skin belongs is the integumentary system, which includes not only skin but also accessories such as nails and hair. Connective tissue is the most diverse type of tissue, including a range of tissue subtypes—the densest is bone, and the loosest is blood.
3. C: Exocrine glands are those glands that secrete substances such as enzymes or mucous through ducts so that the destination is not the blood. Such glands include skin glands and glands of the digestive and reproductive tracts. The prostate falls into this category, as it secretes into ducts that contribute to seminal fluid. Endocrine glands, on the other hand, secrete hormones through capillaries into the blood. The pituitary and adrenal glands both fall into this category. Located in the abdominal cavity, the pancreas has an exocrine function, secreting digestive enzymes into the gastrointestinal tract. However, it is also an endocrine gland, releasing glucagon and insulin into the blood.
4. A: In mammals, the right and left sides of the heart are separated functionally, as if there were two hearts: one to pump deoxygenated blood to the lungs and the other to pump blood that has been oxygenated in the lungs to the body tissues. Each side of the heart includes an atrium, where blood returning to the heart collects, and a ventricle. Blood moves from each atrium to the corresponding ventricle on the same side of the heart, passing through the tricuspid and bicuspid (mitral) valves on the right and left, respectively. Blood from the right ventricle goes into the pulmonary artery on its way to the lungs, passing first through a valve known as the pulmonary valve. The aortic valve is the valve through which blood from the left ventricle passes going into the aorta on its way to body tissues.
5. D: Most of the oxygen that is taken into the body through the lungs is carried attached to hemoglobin molecules in red blood cells (erythrocytes). However, a small amount of oxygen also is dissolved physically in the aqueous component of the blood. Arterial blood is nearly 100 percent saturated with oxygen, but venous blood typically is still approximately 75% saturated with oxygen, although in certain athletes, during peak performance venous blood can get as low as 15% saturated or so due to increased efficiency on oxygen unloading into tissues demanding oxygen.