Exam 1: Introduction to Physiology and Homeostasis

Match the terms labelled a. through d. with their correct descriptions. (Options may be used more than once or not at all.) a.nervous tissue b.epithelial tissue c.muscle tissue d.connective tissue -This tissue type is made up of cells specialized in the exchange of materials between the cell and its environment.

The ____________________ system is the transport system of the body.

To sustain life, the internal environment must be maintained in an absolutely unchanging state.

Factors that are homeostatically regulated are maintained at a constant, fixed level unless disease is present.

Which statements regarding stem cells is correct?

Match the terms labelled a. through d. with their correct physiological events. (Options may be used more than once or not at all.) a.intrinsic control b.negative-feedback control c.positive-feedback control d.feedforward control -the release of a hormone to lower blood calcium level when it gets too high

The lungs remove carbon dioxide from the blood plasma.

Endocrine glands secrete hormones through ducts into the blood.

Which of these statements concerning internal environment is correct?

The concentration of salt in the extracellular fluid influences how water enters and leaves cells.

____________________ cells are specialized to send electrical signals.

Which of these types of tissues uses the terminology "smooth"?

The hormone insulin enhances the transport of glucose (sugar) from the blood into most of the body's cells. Its secretion is controlled by a negative-feedback system between the concentration of glucose in the blood and the insulin-secreting cells. Therefore, which of the following statements is correct?

The body cells are in direct contact with and make life-sustaining exchanges with the ____________________.

Which of the following is an example of a positive-feedback system?

Match the terms labelled a. through d. with their correct physiological events. (Options may be used more than once or not at all.) a.intrinsic control b.negative-feedback control c.positive-feedback control d.feedforward control -increased cardiac activity to elevate blood pressure when systemic pressure is low

Homeostatic control systems are grouped into two classes: intrinsic and extrinsic controls.

Cells eliminate carbon dioxide as a waste product.

The internal environment consists of the ____________________, which is made up of ____________________, the fluid portion of the blood, and ____________________, which surrounds and bathes all cells.

Match the terms labelled a. through d. with their correct descriptions. (Options may be used more than once or not at all.) a.nervous tissue b.epithelial tissue c.muscle tissue d.connective tissue -The heart is made of this type of tissue.