TEAS Practice Test Science

Correct Answer: B

Rationale: The correct answer is B: Fight infection. White blood cells are a crucial part of the immune system, responsible for identifying and attacking foreign invaders such as bacteria, viruses, and other pathogens. They play a key role in defending the body against infections and diseases. Choices A, C, and D are incorrect because white blood cells do not primarily function in transporting oxygen, producing antibodies, or regulating body temperature. Oxygen transport is mainly the role of red blood cells, antibody production is the function of B cells, and body temperature regulation involves processes such as sweating and shivering controlled by the hypothalamus.

Correct Answer: C

Rationale: The correct answer is C: The bladder. The bladder is located in the pelvic cavity, specifically in the lower part of the abdomen. It is a hollow organ that stores urine before it is expelled from the body. The kidneys (A) are located in the upper abdominal area, the colon (B) is part of the large intestine and extends from the cecum to the rectum, and the rectum (D) is the final part of the large intestine before the anus. Therefore, the bladder is the only structure among the choices that is specifically located in the pelvic cavity.

Correct Answer: B

Rationale: The correct answer is B: Occipital lobe. The occipital lobe is primarily responsible for processing visual information. It contains the primary visual cortex which helps in interpreting visual stimuli. The frontal lobe (A) is responsible for executive functions, the parietal lobe (C) for processing sensory information, and the temporal lobe (D) for auditory processing and memory. Therefore, the occipital lobe is the correct choice for vision processing.

Correct Answer: B

Rationale: The correct answer is B: Larynx. The larynx houses the vocal cords, which vibrate to produce sound for voice production. The pharynx is involved in swallowing, the trachea is responsible for air passage to the lungs, and the bronchi are the airways that branch off from the trachea into the lungs. The larynx specifically contains the vocal cords, making it the structure responsible for voice production.

Correct Answer: D

Rationale: The correct answer is D, the cerebrum. The cerebrum is the largest part of the brain and is responsible for higher brain functions such as thought, reasoning, memory, and voluntary actions. It consists of the cerebral cortex, which plays a crucial role in processing sensory information and controlling motor functions. The amygdala (A) is involved in emotions and memory, the brain stem (B) controls basic life functions like breathing and heart rate, and the cerebellum (C) coordinates movement and balance. Therefore, the cerebrum is the correct choice for higher brain functions.