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BIO104 Unit Review
| Question | Answer |
|---|---|
| Sound is produced by air being expelled from the lungs and passed over the vocal cords. | True |
| External respiration involves the use of oxygen to release energy stored in nutrient molecules such as glucose. | False |
| The larynx gives resonance to the voice. | False |
| There are about 500 million alveoli in an adult lung. | True |
| Chemical control of respiration is dependent on the level of carbon dioxide in the blood. | True |
| Most respiratory infections are caused by bacteria. | False |
| If the level of carbon dioxide in the blood is too low, it can result in dizziness and fainting. | True |
| Respiratory illnesses account for 20 percent of all acute illness. | False |
| Quiet breathing at a normal rate is called eupnea. | True |
| The most difficult part of breathing for individuals with emphysema is inhaling sufficient amounts of air. | False |
| Thirty minutes of physical exercise is recommended for most days of the week as a way to improve health and decrease risk factors for heart disease. | True |
| Invasive procedures are those that do not penetrate the skin or a body cavity. | False |
| A person's total cholesterol level should be below how many mg/dL? | 200 mg/dL |
| Severe chest pain that occurs when the heart does not receive enough oxygen is called what? | Angina pectoris |
| A rapid heartbeat of more than 100 beats per minute is called what? | Tachycardia |
| What sends out an electrical impulse that begins and regulates the heartbeat? | SA node |
| Cardiac muscle tissue that makes up the major portion of the heart is called what? | Myocardium |
| Where is the apex of the heart located? | It lies on the diaphragm and points to the left of the body |
| All health care workers must have current certification in what? | CPR (cardiopulmonary resuscitation) |
| What blood vessels bring deoxygenated blood back to the heart? | Vena cava |
| Where is the bicuspid, or mitral, valve located? | Between the left atrium and the left ventricle |
| Which vessel contains deoxygenated blood? | Pulmonary artery |
| How does inoculation protect the body against infectious diseases? | Small amounts of disease-causing substances are injected to stimulate the body to produce antibodies |
| What is autoimmunity? | The immune system mistakenly targets normal body cells |
| Which action has been shown to transmit HIV from one person to another? | Engaging in sexual intercourse |
| What is an opportunistic infection? | An infection most often contracted by a person with a depressed immune system |
| How many injections are in the hepatitis B series for someone who has never received the vaccine? | Three |
| What system can be considered a supplement to the circulatory system? | Lymphatic system |
| What two substances act as intermediaries between the blood in the capillaries and the body's tissues? | Interstitial fluid and lymph |
| What are tiny, oval-shaped structures ranging in size from a pinhead to an almond? | Lymph nodes |
Created by:
jullian18