bio 108 exam 3

which of the following describes pulmonary circulation?

• high pressure, high volume

• high pressure, low volume

• low pressure, low volume

• low pressure, high volume

in which part of the respiratory system does gas exchange take place?

• trachea

• pharyx

• bronchi

• alveoli

which of the following are true of class 1 major histocompatibility complex molecules?

• class 1 MHC molecules bind complement

• class 1 MHC molecules present endogenous antigens

• class 1 MHC molecules present in exogenous antigens

• class 1 MHC molecules are only present on erythrocytes surfaces

what iniciates t cell activation?

• t cell activation begins when a t cell is ingested by macrophages

• t cell activation begins with a dendentric cell processing and displaying antigents fragments on its MHC molecules

• t cell activation begins when the t cell differentiates into effector cells and memory cells

• t cell activation begins with the interaction of t cell with other molecules on the cells called costimulators

which type of cell secretes pepsinogen and gastric lipase?

• g cells

• mucous neck cells

• pariental cells

• chief cells

respiratory mucosa is which of the following types of epithelial tissue?

• simple squamous

• cuboidal

• stratified squamous

• pseudostratified columnar

what cells are responsible for cell mediated immunological memory in which the immune response is expedited upon subsequent exposure to an antigen?

• memory t cells

• effector cells

• b cells

• MHC molecules

activated b cell differentiate into:

• plasma cells and memory cells

• effector cells and memory cells

• antibodies and memory b cells

• plasma cells and effector cells

in the respiratory system of a healthy person which condition always apply?

• intrapulmonary pressure < intrapleural

• intrapulmonary pressure> intrapleural pressure

• intrapleural pressure> atmospheric pressure

• intrapleural pressure< atmospheric pressure

which of the following factor influencing pulmonary ventilation is usually insignificant becuase of the large airway diameters

• alveolar surface tension

• airway resistance

• lung compliance

• all of the above