Biology

Eric P. Widmaier; Linda E. Graham; Robert J. Brooker

Chapter 40

Animal Bodies and Homeostasis - all with Video Answers

Educators

Chapter Questions

Problem 1

Tissue that is specialized to conduct electrical signals from one structure
in the body to another structure is __________ tissue.
a. epithelial
b. connective
c. nervous
d. muscle

Lauren Levites

Lauren Levites

Numerade Educator

Problem 2

Structures composed of two or more tissue types arranged in various proportions and patterns are
a. cells.
b. tissues.
c. organs.
d. organ systems.
e. organisms.

Lauren Levites

Numerade Educator

Problem 3

The extracellular matrix (ECM) of connective tissue
a. contains different proteins that provide structural support to cells.
b. provides a scaffolding for the cells of the tissue.
c. plays a role in cellular communication.
d. does all of the above.
e. does a and b only.

Christina Sorrentino

Christina Sorrentino

Numerade Educator

Problem 4

From an examination of the structure of many animal organs,
a. it is apparent that an organ's surface area increases more than its
volume as an organ enlarges.
b. a general function can sometimes be predicted based on the structural adaptations.
c. it can be seen that different tissues do not come into contact with
each other within an organ.
d. all four tissues are equally represented in all organs.
e. None of the above is correct.

Lauren Levites

Numerade Educator

Problem 5

Most of the water in an animal's body
a. lacks any type of dissolved ions or other solutes.
b. is found in the spaces between cells.
c. is contained inside the cells.
d. is located in the extracellular fluid.
e. is unable to move between body compartments.

Lauren Levites

Numerade Educator

Problem 6

The folds, convolutions, or extensions found in many animal structures
result in
a. decreased level of activity in that particular structure.
b. interruption in the normal functioning of the structure.
c. increased surface area for absorption, communication, or exchange.
d. increased volume without a change in surface area.
e. none of the above.

Lauren Levites

Numerade Educator

Problem 7

Adapting to changes in the external environment and maintaining internal variables within physiological ranges is
a. equilibrium.
b. a conditioned response.
c. positive feedback.
d. homeostasis.
e. both $c$ and $d .$

Lauren Levites

Numerade Educator

Problem 8

Which of the following statements regarding negative feedback is false?
It helps regulate variables such as body temperature and blood
pressure.
b. It is the mechanism by which birth occurs in mammals.
c. It is a major feature of homeostatic control systems.
I. It prevents homeostatic responses from overcompensating.
e. It may occur at the organ, cellular, or molecular level.

Christina Sorrentino

Christina Sorrentino

Numerade Educator

Problem 9

The ability of an animal's body to prepare for a change in some variable before the change occurs is called
a. positive feedback.
b. negative feedback.
c. homeostasis.
d. feedforward regulation.
e. autoregulation.

Christina Sorrentino

Christina Sorrentino

Numerade Educator

Problem 10

A hormone differs from a neurotransmitter in that
a. hormones act extracellularly, whereas neurotransmitters act within
the cell that synthesized them.
b. hormones are released only by neurons, whereas neurotransmitters are released by many different types of cells.
c. hormones cause only fast responses (seconds or less) to stimuli, whereas neurotransmitters cause slow responses (minutes to hours) to stimuli.
d. hormones affect only epithelial cells, whereas neurotransmitters
affect only muscle cells.
e. hormones are released into the bloodstream and can activate many
cells in many parts of the body, whereas neurotransmitters are released by neurons and affect adjacent cells.

Lauren Levites

Numerade Educator