Cells, Organ Systems and Digestion

How many organ systems are in the human body? 3 5 11 15

11

Approximately what percentage of a cell's mass is comprised of water? 25 percent 50 percent 70 percent 90 percent

70 percent

Which of the following is a pulpy, acidic fluid passing from the stomach to the small intestine, consisting of gastric juices and partially digested food? Bile Chyme Gastrin Pyloric acid

Chyme

Which organ system works closely with the nervous system to produce, release, and regulate hormones? Lymphatic system Endocrine system Respiratory system Integumentary system

Endocrine system

Epithelial cells can be classified as squamous, cuboidal, or columnar. pyramidal. cylindrical. epidermal.

columnar.

Tendons and ligaments are made of fascial tissue. loose connective tissue. dense connective tissue. specialized connective tissue.

dense connective tissue.

The small intestine is divided into three sections, in the following order: rectum, colon, and anus. colon, rectum, and anus. duodenum, jejunum, and ileum. ileum, jejunum, and duodenum.

duodenum, jejunum, and ileum.

Specialized cells on the pancreas, which secrete insulin, glucagon, and somatostatin are referred to as the hepatic portal. endocrine islets. pancreatic portal. islets of Langerhans.

islets of Langerhans.

A thin polar membrane made of pairs of lipid molecules, is known as a(n) organelle. lipid bilayer. phospholipid. globular protein.

lipid bilayer.

The three types of muscle found in the human body are: cardiac muscle, skeletal muscle, and smooth muscle. striated muscle. respiratory muscle. endothelial muscle.

smooth muscle.