Endocrine

Every time you take a breath, you are (1) _____ the respiratory surfaces of your lungs. Each lung has approximately 300 million tiny thin-walled outpouching air sacs called (2) ____. Inhaled air dead-ends in these (2), each of which is surrounded by a network of pulmonary (3) _______ into which oxygen from air diffuses and is exchanged for (4) ___ ___ waste gases diffusing from the bloodstream into alveolar cavities. The (5) ____ _____ surrounds each lung. In succession, air passes through the nasal cavities, pharynx, and (6) _____, past the epiglottis into the (7) ______ (the space between the true vocal cords), into the trachea, and then to the (8) _____, (9) _____, and alveolar ducts... click for more

Urinary System

The body gains water by absorbing water form the slurry in the lumen of the small intestine and from (1) ______ during condensation reactions. The mammalian body loses water mostly by excretion of (2) ____, evaporation through the skin and (3) ____, elimination of feces from the gut, and (4) _____ as the body is cooled. (5) ____ behavior, in which the brain compels the individual to seek liquids, influences the gain of water. The body gains solutes by absorption of substances from the gut, by the secretion of hormones and other substances, and by (6) _______, which produces carbon dioxide and other waste products of degradative reactions. Besides carbon dioxide, there are several other ... click for more

Nervous System

Nerve cells that conduct messages are called (1) ____. (2) _____ cells, which support and nurture the activities of neurons, make up less than half the volume of the nervous system. (3) _______ neurons respond to specific kinds of environmental stimuli, (4) ______ connect different neurons in the spinal cord and brain, and (5) ______ neurons are linked with muscles or glands. All neurons have a (6) _______ ________ that contains the nucleus and the metabolic means to carry out protein synthesis. (7) _______ are short, slender extensions of the (6), and together these two neuronal parts are the neurons' "input zone" for receiving (8) _____. The (9) _____ is a single long, cylindrical exten... click for more

Nervous System

The junction specialized for the transmission between a neuron and another cell is called a (1) _____ ______. Usually, the signal being sent to the receiving cell is carried by chemical messengers called (2) _____. (3) _____ is an example of this type of chemical messenger, which diffuses across the synaptic cleft, combines with protein receptor molecules on the muscle cell membrane, and soon thereafter is rapidly broken down by enzymes. At an (4) ____ synapse, the membrane potential is driven toward the threshold value and increases the likelihood that depolarization and an action potential will occur. At an (5) ____ synapse, the membrane potential is driven away form the threshold value, a... click for more

Cardiac

1. What digestive enzyme is secreted by the salivary glands and begins the breakdown of polysaccharides? a. protease b. amylase c. lipase d. bile 2. Would a 170 pound person who is 5ft 8inches, be at a high risk for obesity related health problems? a. yes b. no 3. How many calories would a 37-year old, who is moderately active, need to consume if she wanted to maintain a weight of 160 pounds? a. 1500 b. 2000 c. 2300 d. 3500 4. If tracing a drop of blood through the heart, place these structures in their correct sequence beginning as blood returns to the heart through the Vena Cavae. Vena Cavae will be #1. _____Aorta _____Bicuspid valve _____Tricuspid valve... click for more