BSC 116 Ch 40

Which of the following characteristics is likely to be found in larger versus smaller animals?

A highly branched respiratory system

An epithelial cell with a relatively large amount of cytoplasm probably has what function?

Absorption and secretion

Which of the six major types of connective tissue has a rigid matrix that contains collagen and calcium salts?

Bone

Which of the following is a benefit of multicellularity compared to organisms consisting of just one cell?

Cells can specialize.

Which of the following lists of animal structures is ordered from smallest to largest?

Cells, tissue, organ, organ system

Which of the following organ systems in mammals is mismatched with its function?

Circulatory; coordination of body activities

Which of the following systems is correctly paired with one of its parts?

Endocrine system; thyroid gland

Which of the following statements correctly describes a difference between hormone signaling and neuron signaling?

Hormone signals travel throughout the body, but neuron signals travel to specific locations

_________ feedback most directly maintains homeostasis because it __________.

Negative; tends to keep a system at a desirable "set point"

Which of the following mammals would you expect to have the highest basal metabolic rate (BMR)?

Shrew

Which of the following statements correctly describes the differences between simple squamous cells and stratified squamous cells?

Simple squamous cells form a single layer, which is useful for gas exchange, and stratified squamous cells are multilayered and regenerate rapidly.

Which of the following statements is incorrect regarding muscle tissue?

Skeletal muscle consists of cells that each have a single nucleus.

Which of the following pairs of connective tissue and its function is correctly matched?

Tendons; attach muscles to bones

Ligaments connect ________ to ________.

bone; bone

Microscopic analysis of an unknown tissue sample reveals the presence of chondrocytes, indicating that the sample was probably taken from __________ tissue.

cartilage

A neuron receives nerve impulses from other neurons via its _________ and __________.

cell body; dendrites

An organism that generates body heat by means of its own metabolism is _________, and an organism that gains body heat from external sources is ________.

endothermic; ectothermic

During a fever, the __________ readjusts the set point of the body to a __________ temperature.

hypothalamus;higher

Humid weather makes you feel warmer because humid air, which is saturated with water molecules, __________.

interferes with heat loss by evaporation

When a person's body temperature increases, sweating helps bring the temperature down. This is an example of __________.

negative feedback

An organ such as the heart or liver consists of __________.

nervous, muscle, connective, and epithelial tissue

The __________ system and the __________ system work together to coordinate and control the bodies of most animals.

nervous; endocrine

In blood, the matrix component is ________, and the cellular component contains _________.

plasma; red and white blood cells

Myosin and actin are __________.

proteins that play a major role in muscle contraction

Skeletal muscle is said to be "striated" because __________.

the arrangement of the sarcomeres gives it a striped appearance

Interstitial fluid is __________.

the fluid that fills the spaces between cells of vertebrates

Most cells are microscopic because at this small size, __________.

the ratio of surface area to cell volume is maximized

Where in the body would you be most likely to find secretory cells shaped like dice?

thyroid and salivary glands

The main function(s) of connective tissues in the body is/are _________.

to hold tissues and organs in place and to join adjacent tissues together

A physiological state of decreased activity and metabolism that is an adaptation enabling animals to save energy while avoiding difficult and dangerous conditions is known as _________.

torpor