A tissue sample studied under a microscope exhibits the following characteristics: an extracellular matrix providing rigidity to the tissue, and the presence of lacunae. Which type of tissue is this?

Question

Quizplus · Accepted Answer

Bone (particularly spongy bone) is a type of connective tissue that consists of a rigid extracellular matrix. Lacunae are small spaces in the bone tissue. Each lacuna contains an osteocyte, which is a mature bone cell.
Adipose, or fat, is another type of connective tissue. Adipose tissue is loose. It is white or yellowish in color. It does not contain lacunae (only bone and cartilage do).
Epithelial tissues form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. Epithelial cells fit closely together and form continuous sheets.
Nervous tissue is specialized tissue found in the central nervous system and the peripheral nervous system. It consists of neurons and supporting cells called neuroglia. Nervous tissue, under a microscope, looks like large dark cells with long projections sticking out of them (like stars).
Below is a bone tissue sample under a microscope. Note the small black spots. These are lacunae.
 11ec0fda_9995_04cd_a67f_2325b9b4af85_NR0004_00 Below is a diagram showing the four major types of tissue (bone and adipose are types of connective tissue). Note that the sample image of connective tissue below is adipose (fat).
 11ec0fda_9995_04ce_a67f_f1643bf24aac_NR0004_00 OpenStax College / CC BY (https://creativecommons.org/licenses/by/3.0)

A Tissue Sample Studied Under a Microscope Exhibits the Following