Anatomy and Physiology Basics Flashcards
6 cards from real CNA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Anatomy and Physiology Basics flashcards as text
Which body system is responsible for transporting oxygen and nutrients to cells throughout the body?
Answer: Cardiovascular system
The cardiovascular system, consisting of the heart and blood vessels, pumps blood that carries oxygen and nutrients to every cell in the body and removes waste products.
What is the largest organ of the human body?
Answer: Skin
The skin is the largest organ of the body, covering the entire external surface and serving as a protective barrier against infection, temperature regulation, and sensation.
Which of the following is a function of the skeletal system?
Answer: Protecting internal organs
The skeletal system protects vital internal organs — for example, the skull protects the brain, and the rib cage shields the heart and lungs — while also providing structure and enabling movement.
The process by which the body breaks down food into nutrients that can be absorbed into the bloodstream is called:
Answer: Digestion
Digestion is the process of mechanically and chemically breaking down food into smaller molecules — such as glucose, amino acids, and fatty acids — that can be absorbed by the intestines and transported through the blood.
Which organ is responsible for filtering waste products from the blood and producing urine?
Answer: Kidney
The kidneys filter approximately 200 liters of blood per day, removing waste products and excess water to produce urine, which is then excreted from the body through the urinary tract.
The nervous system is divided into two main parts. Which of the following correctly identifies these two divisions?
Answer: Central and peripheral nervous systems
The nervous system is divided into the central nervous system (CNS), comprising the brain and spinal cord, and the peripheral nervous system (PNS), which includes all the nerves that branch out from the CNS to the rest of the body.