exam #3 bio quiz
Which of the following statements about bones is false?
Bones are dry and dead, made up of calcium and connective fibers with a few blood vessels running through them.
What is the main role of red blood cells?
Carry oxygen
Which of the following is an organ system?
Circulatory system
How is diabetes linked with homeostasis?
Diabetes results from the body not responding with a negative feedback to the level of glucose in the blood.
Sound is "heard" when sound waves cause structures inside your ears to physically vibrate. A signal is then sent to your brain where it is interpreted as sound. What type of receptor in the ear is responsible for the sense of hearing?
Mechanoreceptors
Connective tissue is the most variable of the tissue types. Which one of the following is not categorized as connective tissue?
Muscle
The respiratory system exchanges which gases?
Oxygen is inhaled, while carbon dioxide is exhaled.
Which of the following combinations of components of blood play a role in blood clotting?
Platelets and fibrin
What is chemical digestion?
The breakdown of food by enzymes
Which brain structure is the largest and most complex?
The cerebellum
What is an action potential?
The electric signal used by neurons to transfer information
What happens during diastole?
The heart muscles relax, allowing blood to flow into all chambers of the heart.
In what way can the human circulatory system be described as double circulation?
The human cardiovascular system includes the pulmonary circuit and a systemic circuit.
What are hormones?
They are chemicals transported in the blood that affect target cells throughout the body.
What is the name of the tubes that run from the kidneys to the bladder?
Ureters
Form refers to ________, and function refers to ________.
anatomical structure; physiological actions
Which are the thinnest blood vessels?
capillaries
Blood types A, B, AB, and O are determined by ________.
carbohydrates on the surface of the red blood cells
Maintaining a steady-state internal environment, despite a changing external environment, is called ________.
homeostasis
The main role of the liver is to ________.
produce bile, which helps the process of digestion
