Chapter 4 Questions

A: Fibrosis During the process of tissue repair, fibrosis involves the proliferation of a fibrous connective tissue called scar tissue.

A: epithelial tissue and nervous tissue Nervous tissue develops solely from embryonic ectoderm, while epithelial tissues develop from ectoderm, endoderm, and mesoderm embryonic tissue.

A: Dense regular connective tissue regular connective tissue forms tendons.

A: Epithelia and Connective Tissues Epithelial tissue secretes the superficial basal lamina region of the basement membrane, whereas connective tissue produces the deeper reticular layer of the basement membrane.

Simple squamous endothelium lines the interior of blood vessels.

Goblet cells, located between columnar epithelial cells, function in producing the protein mucin, which, when combined with water, forms mucus.

The cilia on an epithelium bend and move in coordinated waves, pushing mucus and other substances over the epithelial surface.

Squamous cells are flattened and scale-like.

Simple squamous epithelial tissue, composed of a single layer of flattened cells, occurs wherever small molecules must pass through a membrane quickly.

While areolar connective tissue holds body fluids, stores nutrients, supports and binds other tissues, and defends the body against infection, movement of body parts is a task performed by the three different types of muscle tissue: skeletal, cardiac, and smooth.

All epithelia have an apical surface and a lower attached basal surface and exhibit apical-basal polarity.

All connective tissues have a common, mesenchymal origin and secrete ground substance.

Simple columnar epithelial tissue lines most of the digestive tract, from the stomach to the rectum.

Stratified squamous is the thickest form of epithelial tissue and is composed of multiple layers of flat cells.

Transitional epithelium forms the lining of hollow urinary organs, which stretch as they fill with urine.

The cross-linked fibrils of collagen fibers make them strong fibers with the greatest tensile strength.

These specialized simple columnar epithelial cells are goblet cells.

Because of its rocklike hardness, bone has an exceptional ability to support and protect body structures.

Nervous tissue sends electrical signals to control the body.

The epidermis is stratified squamous epithelium.

Chondroblasts secrete the ground substance of cartilage.

Microvilli are present on the free surface of the cell, which is the apical surface.

Smooth muscle is unstriated, unbranched, involuntary, spindle shaped, and found in the walls of most hollow organs.

The stratified squamous epithelium, which forms the epidermis, contains keratin that allows it to be a tough protective cover for the body.

A holocrine gland stores its secretion until the gland ruptures.

Mesoderm gives rise to connective tissue.

Brown fat is found in young infants, who lack the ability to produce body heat by shivering.

An aponeurosis is a flat, sheetlike tendon that connects muscle to muscle or bone.

Multicellular exocrine glands with round secretory cells are alveolar, and if the ducts branch, they are considered compound.

Reticular connective tissue forms the stroma, or foundation, of most solid organs.

increase surface area

secretion and absorption

filtration and diffusion

protection from wear and tear

stretching

pseudostratified columnar epithelium

to secrete substances onto body surfaces or into body cavities

a holocrine gland

Goblet cells

A: Transitional Blood is a connective tissue with a liquid matrix called plasma. Bone is a connective tissue with a solid matrix. Cartilage is a connective tissue that functions to cushion and support body structures. Transitional is a type of epithelial tissue that stretches readily and permits stored urine to distend a urinary organ such as the bladder.

Collagen is a fibrous protein that provides tensile strength to certain connective tissues.

formation of cartilage

blood cell formation

formation of connective tissue proper

bone formation

body's defense system

transportation of bodily substances

Macrophages are phagocytic cells.

a loose connective tissue

responding to stimuli

Cardiac muscle is characterized by the presence of intercalated discs. Additionally, cardiac muscle is under an involuntary control mechanism.

cutaneous

inflammation The steps in tissue repair are inflammation, organization, and regeneration.

Ectoderm, endoderm, and mesoderm can all give rise to epithelial tissues.