Chapter 4 Questions

A person spends too much time in the sauna and starts to become dizzy. What is the first step in negative feedback that will occur to promote homeostasis?

Thermoreceptors sense the temperature change and send signals to the hypothalamus.

Tight junctions would be most numerous in areas that require ________.

an impermeable or leakpoof seal

A patient suffers from weakness and goes to the doctor and is diagnosed with high blood sugar levels. Which organ system can be causing this problem?

endocrine system

The presence of tightly packed cells with a free surface and a basement membrane allows this tissue to be quickly identified as ______________.

epithelial tissue

Which of the following is not a function of the integumentary system?

fat storage

Which of the following is not a function of the integumentary system? thermoregulation vitamin production protection from drying out fat storage protection from infection

fat storage

Which is not a structure associated with the integumentary system?

hypodermis

Which is not a structure associated with the integumentary system? blood vessels nerve fibers sebaceous glands hypodermis arrector pili muscles

hypodermis

Passages of the digestive system contain _____ membranes.

mucous

The main difference between negative feedback and positive feedback is that _______.

negative feedback minimizes changes from set point

Which cavity does not surround the heart?

pleural

What is the function of serous membranes?

prevent internal organs from rubbing against each other

The main difference between an endocrine gland and an exocrine gland is that the endocrine gland ____________.

secretes hormones and lack ducts

A body temperature of 37OC, blood pressure of 120/80, and a blood pH of 7.35 to 7.45 are all examples of

set points

Which tissue has the function of secretion and absorption and is located in the kidney tubules?

simple cuboidal epithelial tissue

The _____ system functions to store calcium and phosphate ions and works with the muscular system for movement.

skeletal

What is a key structural feature that distinguishes cardiac tissue from other types of muscular tissues?

the presence of specialized junctions between cells

The diaphragm separates which two body cavities?

thoracic and abdominal cavities

which of the following does not influence skin color? white blood cells oxygen melanin red blood cells blood flow

white blood cells

_____ tissue contains collagen, elastic, and reticular fibers.

Connective

The presence of an extracellular matrix is most characteristic of which tissue?

connective tissue

Sebaceous glands are found in which layer of skin?

dermis

Which of the following is not part of a neuron? dendrite nucleus cell body axon desmosome

desmosome