Bio HW questions; ch. 8-10

The order beginning with blood leaving the right ventricle of the heart

- Pulmonary Arteries - Lungs - Pulmonary veins - Left atrium - Bicuspid valve - Left ventricle

The order blood would pass through them, beginning with blood returning from body tissues:

- Vena Cava - Right atrium - Tricuspid valve - Right ventricle - Pulmonary Semilunar Valve - Pulmonary trunk

Which of the following is not a function of the bronchi and bronchioles? a: Gas exchange b Transporting air c: Cleansing air d: Humidifying air

A: Gas exchange

Which of the follow contains lysozyme to kill bacteria? a: Saliva b: Mucus c: Antibodies d: Stomach acid

A: Saliva

Which of the following is located on the right side of the heart? a: Tricuspid valve b: Bicuspid valve c: Aortic semilunar valve d: Mitral valve

A: Tricuspid valve

What occurs as air is drawn through the nose?

Air is warmed, filtered, and humidified.

Match each vessel with the phrase that correctly describes it:

Artery: Carry blood under high pressure Vein: Carry blood back to the heart Capillary: Site of gas exchange between blood and tissues Lymphatic vessels: Return excess fluid to circulatory system

Which one of the following is characteristic of T lymphocytes but NOT B lymphocytes? a: production of antibodies b: mature in the thymus c: production of plasma cells d: antibody-mediated immunity

B: Mature in the thymus

Which one of the following is a CORRECT statement? a: Blood pressure is higher in veins than in arteries. b: Veins have a larger lumen than arteries. c: Veins carry blood to the capillaries of the body. d: All veins carry oxygenated blood.

B: Veins have a larger lumen than arteries.

Which of the following responses of the immune system would increase blood flow to an area in order to allow phagocytes to enter the tissue and engulf pathogens? a: Fever b: Interferon release c: Inflammation d: Natural Killer cell activation

C: Inflammation

Which of the following antibodies is involved in allergic reactions? a: IgG b: IgM c: IgA d: IgE e: IgD

D: IgE

Which of the following statements is true? a: The left lung possesses three lobes. b: Bronchioles are the primary site of gas exchange. c: The nasal cavity is involved in cooling air before it enters the lower respiratory tract. d: The walls of alveoli are composed of simple squamous epithelium.

D: The walls of alveoli are composed of simple squamous epithelium.

Which one of the following types of T cells is involved in the direct attack of virally-infected or cancerous cells? a: T suppressor cells b: memory T cells c: T helper cells d: cytotoxic T cells e: natural killer cells

D: cytotoxic T cells

All of the following represent physical and/or chemical barriers that form the body's first line of defense against pathogens EXCEPT which one? a: tears b: resident bacteria c: skin surface d: earwax e: interferon

E: Interferon

Blood pressure that is higher than normal would be known as

Hypertension

The diaphragm contracts during which of the following respiratory phases?

Inspiration

Which of the following layers is responsible for contraction of the heart?

Myocardium

What membranes surround the lungs?

Pleural membranes

Conduction of an electrical impulse to the heart muscle through the AV bundle and Purkinje fibers would be associated with which portion of an EKG?

QRS complex

What substances is released by the alveoli to reduce surface tension in the lungs?

Surfactant

Antigen-presenting cells are involved in activation of which cell type?

T cells

What is a characteristic of the secondary immune response?

The involvement of the activity of memory cells

Which of the following statements is true of the spleen? (Multiple answers) a: The spleen is the largest lymphatic organ. b: The spleen is involved producing red blood cells. c: The spleen may shrink when responding to diseases such as leukemia. d: The spleen contains lymphocytes that respond to pathogens filtered out of the blood. e: The spleen is located in the right thoracic cavity.

a: The spleen is the largest lymphatic organ. d: The spleen contains lymphocytes that respond to pathogens filtered out of the blood.

Which one of the following is TRUE regarding baroreceptors? a: Baroreceptors respond to high blood pressure by causing an increase in heart contraction. b: Baroreceptors are pressure sensors that monitor blood pressure. Your answer c: Baroreceptors respond to low blood pressure by causing vasodilation of the arterioles. d: Baroreceptors are not found in the human body. e: Baroreceptors are sensors that detect heart rate.

b: Baroreceptors are pressure sensors that monitor blood pressure.

Most of the oxygen traveling to the tissues through the bloodstream is transported in what form?

bound to hemoglobin

The aortic semilunar valve opens when the

left ventricle is in systole.

Internal respiration is the process of

moving gases between the bloodstream and target cells.

When air entering the respiratory tract leaves the nasal cavity, it next enters the

pharynx

In the ____ circuit, blood leaving the ____ eventually picks up oxygen and disposes of carbon dioxide in the lungs.

pulmonary; right ventricle

The sinoatrial node does what?

regulates the rate of heart contraction.