4 - Connective Tissue Characteristics and Functions

What was one of the main reasons humans began to cook meat?

• To make the muscle tissue more flavorful.

• To kill bacteria and prevent illness.

• To break down connective tissues that are difficult to chew.

• To increase the protein content of the meat.

What is a defining characteristic shared by all connective tissues?

• They are primarily composed of tightly packed cells.

• They all originate from different embryonic cell types.

• Their structures are dominated by an extracellular matrix full of fibers.

• They are mainly responsible for muscle contraction.

Which of the following describes a characteristic of loose connective tissue, such as areolar tissue?

• It has a high density of collagen fibers, providing strong resistance to tension.

• It is primarily composed of adipocytes that store lipids.

• It contains abundant ground substance and fewer fibers, allowing it to soak up fluids.

• It forms a soft internal framework for organs like the spleen.

What is a key function of reticular tissue?

• To provide strong resistance to tension in tendons and ligaments.

• To store lipids and insulate the body.

• To hold blood in place within organs like the spleen and bone marrow.

• To allow for elastic recoil in the skin.

Which type of dense connective tissue is characterized by irregularly arranged collagen fibers and is found in areas requiring resistance to tension from multiple directions, such as the dermis of the skin?

• Dense elastic connective tissue

• Dense regular connective tissue

• Dense irregular connective tissue

• Areolar connective tissue

Which type of cartilage is known for its glassy appearance under a microscope, provides pliable support, and is found connecting ribs to the sternum and in the tip of the nose?

• Fibrocartilage

• Elastic cartilage

• Hyaline cartilage

• Reticular cartilage

What is the primary function of spongy bone tissue, which is typically found in the heads of long bones and the inner layer of flat bones?

• Providing dense, rigid support for the external layer of bones.

• Storing calcium for bone cell use.

• Storing bone marrow and providing strength while being porous.

• Forming a non-living matrix for protein fibers.

Despite its fluid nature, blood is classified as a connective tissue. What is the primary reason for this classification, and what is its main function?

• It contains a calcified matrix and provides rigid support throughout the body.

• It develops from mesenchyme, contains cells surrounded by an extracellular non-living matrix (plasma), and transports substances throughout the body.

• It is composed primarily of collagen and elastic fibers, providing flexibility and strength to organs.

• It lacks blood vessels and nerves, allowing for shock absorption and cushioning.