Question 1

A(n)________ gland branches repeatedly before reaching the glandular cells or secretory part.

Accepted Answer

A compound gland is one where the duct of the gland branches repeatedly before reaching the glandular cells or secretory part.

Question 2

The skin is composed of an outer layer of epithelial tissue, the epidermis, and an inner layer of connective tissue, the dermis. Between the lowest layer of the epidermis and the top layer of the dermis lies an anchor layer called the ________.

Accepted Answer

The anchor layer between the epidermis and dermis is called the basement membrane.

Question 3

Which type of tissue lines the follicles of the thyroid glands?

Accepted Answer

The follicles of the thyroid gland are lined with simple cuboidal epithelium.

Question 4

The membranes of the blood-brain barrier need to be fused, preventing any substances from entering and/or escaping between cells. The type of intercellular junction best suited for this need is a ________.

Accepted Answer

Tight junctions are the most suitable type of intercellular junction for the blood-brain barrier as they create a nearly impermeable seal between cells, preventing any substances from passing through. Desmosomes, gap junctions, and ion channels allow some degree of communication and exchange between neighboring cells.

Question 5

The merocrine, apocrine, and holocrine secretions differ in the

Accepted Answer

The merocrine secretion involves the release of glandular products without the secretion of cytoplasm, while the apocrine secretion involves the secretion of both cytoplasm and glandular products, and the holocrine secretion releases whole cells containing the glandular products. Therefore, the three types of secretions differ in the amount of cytoplasm secreted along with the glandular product.

Question 6

The tissue through which gases are exchanged between the blood and the air in the lungs is

Accepted Answer

Simple squamous epithelium allows for rapid diffusion of gases due to its thin and flattened structure, making it the ideal tissue for gas exchange in the lungs. Stratified squamous epithelium, simple cuboidal epithelium, and simple columnar epithelium are not involved in gas exchange.

Question 7

Which of the following characteristics is used to name tissue types?

Accepted Answer

Tissue types are named based on the organization of cells within them. For example, epithelial tissues have cells arranged in layers, while muscle tissues have cells organized into bundles or sheets. Location of cells, number of inclusions, and number of mitochondria are not typically used to name tissue types.

Question 8

The pyloric glands of the stomach release hydrochloric acid and other digestive juices during digestion. These glands have very short ducts and the tubes are branched. These glands are ________.

Accepted Answer

The pyloric glands are classified as simple branched tubular because they consist of a single duct that branches into multiple tubules, fitting the description of a simple (single duct) branched (multiple branches) tubular (tube-like structures) gland.

Question 9

What do intercellular junctions connect?

Accepted Answer

Intercellular junctions connect the cell membranes of adjacent cells, allowing for communication and coordination between cells. Choice B is incorrect because cell nuclei are already connected within a single cell through nuclear pores. Choice C and D are also incorrect as they are not related to intercellular junctions.

Question 10

Areolar tissue contains

Accepted Answer

Areolar tissue is a loose connective tissue that contains collagenous fibers, elastic fibers, and a gel-like ground substance. Adipocytes filled with fat are found in adipose tissue, chondrocytes and lacunae are found in cartilage, and osteocytes, osteoblasts, and canaliculi are found in bone tissue.

Question 11

Which of the following is not one of the four basic types of body tissues?

Accepted Answer

The four basic types of body tissues are epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Eye tissue is not a basic type of body tissue, but rather a specialized type of nervous tissue found only in the eyes.

Question 12

Histology is the study of

Accepted Answer

Histology is the study of tissues, which are groups of similar cells that perform a specific function in the body. Histologists use microscopes to study the organization, structure, and function of different tissues.

Question 13

Cartilage tissues are likely to be slow in healing following an injury because

Accepted Answer

Cartilage tissues do not have direct blood supplies, leading to slow healing following an injury. The lack of direct vascularization means that nutrients required for tissue repair must diffuse from surrounding tissues making it hard for the body to keep up with the repair process.

Question 14

The pituitary gland is a structure in the brain that secretes hormones into the bloodstream. What epithelium lines this structure and produces the secretion?

Accepted Answer

The pituitary gland is a glandular structure that produces and secretes hormones into the bloodstream. Therefore, the best choice is D, glandular epithelium.

Question 15

Epithelial tissue functions in

Accepted Answer

Epithelial tissue functions in secretion, absorption, and protection. It covers and lines organs and structures in the body, serving as a barrier against harmful substances, as well as absorbing and secreting essential substances. It does not have a role in contraction, movement, reflexes, thinking, remembering, nourishing, or hydrating tissues.

Question 16

The smooth muscle cells of the digestive tract need to send electrical signals between each other to contract in unison. The type of intercellular junction best suited for this need is ________.

Accepted Answer

Gap junctions are specialized protein channels that connect the cytoplasm of adjacent cells, allowing for the direct exchange of ions and small molecules. In smooth muscle cells, gap junctions allow for the rapid transmission of electrical signals, which allows for coordinated contractions of the muscle tissue. Desmosomes and tight junctions are important for cell adhesion and maintaining tissue integrity but do not facilitate direct communication between cells. The blood-brain barrier is a specialized structure that regulates the movement of substances between the blood and brain tissue, and is not relevant to intercellular communication in the digestive tract.

Question 17

The epidermis (outer layer of the skin)needs to be tough and resistant to shearing and stretching. The type of intercellular junction best suited for this need is a(n)________.

Accepted Answer

Desmosomes are the intercellular junctions that provide strong adhesion between adjacent epithelial cells, making them best suited for providing toughness and resistance to shearing and stretching in the epidermis. Gap junctions allow for communication between cells, tight junctions create a barrier to prevent leakage between cells, and ion channels are membrane proteins that allow the transport of ions across cellular membranes.

Question 18

The type of epithelium that lines the urinary bladder and many of the urinary passageways is

Accepted Answer

Transitional epithelium is specialized for stretching and can change shape from squamous to cuboidal. This allows it to accommodate changes in the volume of the bladder and urinary passageways as they fill and empty.

Question 19

Tendons and ligaments are composed primarily of

Accepted Answer

Tendons and ligaments are composed primarily of dense regular connective tissue, which provides strength and flexibility to these structures. Dense irregular tissue is found in the dermis of skin and in some organs. Reticular connective tissue is found in organs such as liver and lymph nodes. Muscle tissue is specialized tissue for movement and contraction.

Question 20

The tissue that forms the inner lining of the respiratory passages is

Accepted Answer

The inner lining of the respiratory passages is primarily composed of pseudostratified columnar epithelium with cilia and goblet cells, which secrete mucus to trap particles and move them out of the respiratory system. This type of tissue is commonly found in the nasal cavity, trachea, bronchi, and larger bronchioles.

Quiz 5: Tissues

A(n) ________ gland branches repeatedly before reaching the glandular cells or secretory part.