Question 1

Which plane divides the body into anterior and posterior sections, and which medical imaging technique commonly uses this plane for viewing the heart and lungs?

Accepted Answer

Frontal (coronal) plane; CT scan

Question 2

Which of the following best describes the function of microtubules in a cell?

Accepted Answer

They shape the cell and facilitate movement of organelles.

Question 3

During which phase of mitosis do chromosomes align along the center of the cell, and what is the significance of this alignment?

Accepted Answer

Metaphase; ensures equal distribution of chromosomes to daughter cells

Question 4

Which type of epithelial tissue is specialized for diffusion and is found lining the air sacs of the lungs?

Accepted Answer

Simple squamous epithelium

Question 5

Which connective tissue fiber is primarily responsible for providing high tensile strength and is most abundant in tendons?

Accepted Answer

Collagen fibers

Question 6

A patient presents with pain in the right lower quadrant (RLQ) of the abdomen. Which organ is most likely involved?

Accepted Answer

Appendix

Question 7

Which of the following elements makes up the largest percentage of the human body by weight and is essential for cellular respiration?

Accepted Answer

Oxygen

Question 8

Which type of mixture is blood classified as, and why?

Accepted Answer

Suspension; because large particles settle out over time

Question 9

Which of the following molecules is nonpolar and why?

Accepted Answer

Carbon dioxide (CO$$_2$$); because it is linear and symmetrical

Question 10

Which of the following is a correct pairing of a macromolecule and its monomer?

Accepted Answer

Carbohydrate – Monosaccharide

Question 11

Which of the following best describes the function of the Na$$^+/K$^+$$ pump in the plasma membrane?

Accepted Answer

It uses ATP to move Na$$^+$$ out of the cell and K$$^+$$ into the cell against their concentration gradients.

Question 12

Which type of cell junction is most important in preventing the leakage of digestive enzymes between epithelial cells lining the intestines?

Accepted Answer

Tight junctions

Question 13

Which of the following best describes the difference between simple diffusion and facilitated diffusion?

Accepted Answer

Facilitated diffusion requires a carrier protein, while simple diffusion does not.

Question 14

Which organelle is responsible for modifying, sorting, and packaging proteins for secretion or delivery to other organelles?

Accepted Answer

Golgi apparatus

Question 15

Which phase of the cell cycle is characterized by DNA replication?

Accepted Answer

Interphase

Question 16

Which type of epithelial tissue is found lining the urinary bladder and is specialized for stretching?

Accepted Answer

Transitional epithelium

Question 17

Which connective tissue type is found in the walls of large arteries and allows for recoil after stretching?

Accepted Answer

Dense elastic connective tissue

Question 18

Which of the following statements about the pH of blood is correct?

Accepted Answer

Blood is slightly basic with a pH range of 7.35–7.45.

Question 19

Which of the following best describes the role of buffers in the human body?

Accepted Answer

Buffers resist abrupt changes in pH by releasing or binding H$$^+$$ ions.

Question 20

Which of the following is a function of the serous membrane?

Accepted Answer

Reduces friction between organs in the ventral body cavity

Essential Study Guide: Human Body Orientation, Chemistry, Cells, and Tissues

Study Guide - Practice Questions

Study Guide - Flashcards