FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 20: Unifying Concepts of Animal Structure and Function

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 21

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following statements regarding skeletal muscle is true?

A) Skeletal muscle is attached to bones by tendons.
B) Skeletal muscle cells are not striated.
C) Skeletal muscle is largely responsible for involuntary body motions.
D) Skeletal muscle coordinates movement of nutrients and oxygen throughout the body.

Correct Answer

verified

Show Answer

Question 22

Multiple Choice

Review LaterAdd Note

Review Later

Hyperthyroidism treatment in cats usually involves antithyroid medication or the use of radioactive iodine to destroy the abnormal (overactive) tissue growing in the thyroid gland. Surgery to remove the abnormal tissue is generally not advised, as the surgery could also accidentally destroy parathyroid tissue. The parathyroid gland releases a hormone called PTH that increases blood calcium levels. Based on your knowledge of homeostasis, predict why surgery is ill-advised.

A) Blood calcium levels would reach abnormally low levels if there is a lack of PTH.
B) Blood calcium levels would reach abnormally high levels if there is a lack of PTH.
C) Positive feedback will not be able to compensate for any problems caused by negative feedback.
D) A lack of PTH disrupts positive feedback control of blood calcium levels.

Correct Answer

verified

Show Answer

Question 23

Multiple Choice

Review LaterAdd Note

Imagine an invertebrate that lives in an estuary where salinity varies cyclically with the tides. If this individual is able to adjust the salt concentration of its body fluids, its salt concentration will have

You are looking at a tissue under a microscope. You see mostly densely packed fibers with some cells scattered throughout. You would predict that the function of this tissue is to

Which of the following statements about an organ is false?

Stratified squamous epithelium is well suited for

The connection between structure and ________ is a basic concept of biology.

The vertebrate kidney helps to keep the acidity of body fluids constant by varying the amount of hydrogen ions (H+) it secretes into the urine. You can confidently predict that this aspect of kidney function will be controlled by

You are looking at a sample of epithelial tissue under a microscope. What would you look for to determine the type of epithelium you are viewing?

A leading motivation for scientists to bioengineer human organs for transplant is the trend in the percentage of patients on the organ transplant waiting list who receive a transplant (that is, [Number receiving transplant/Number on the wait list] × 100) , as shown in this graph. Furthermore, although ethnic groups generally donate in proportion to their group's representation in the U.S. population, the need for particular organs in some groups is much higher than in others. For example, chronic kidney disease is three times more common in African Americans, Asians and Pacific Islanders, and Hispanics/Latinos as compared to Caucasians. Although organ compatibility is based on blood type and tissue markers, and not ethnicity, a compatible match is more likely between people of the same ethnic group (that is, with greater genetic similarity) . Thus, bioengineering of human organs can also potentially solve the problem of decreased access to organ transplants among diverse groups of people. Change in percent of organ transplant waiting list who receive a transplant -Bioengineered organs can potentially reduce the risk of transplants being rejected by a patient's immune system. What is the best design for a study that examines transplant rejection of bioengineered organs in different ethnic groups?

One of the functions of skin is the synthesis of vitamin D. Which of the following would be evidence for this function?

The main function of muscle tissue is

Which of the following is closely associated with the exchange functions of the digestive, respiratory, and urinary systems?

Homeostasis

Which of the following is a major category of animal tissue?

When body temperature is too high, which of the following occurs?

The respiratory system includes all of the following structures except the

Which of the following indicates a poorly designed study?

Most homeostasis depends on

If the epithelium that lines the air sacs of your lungs were to gain a layer of cells, which of the following would likely occur to the rate of oxygen diffusion?