Anatomy and Physiology Final Chapter 4

How are endocrine and exocrine glands different from each other? Endocrine glands have no ducts. Exocrine glands have specific target organs for their secretions. Exocrine glands secrete hormones. Exocrine glands are only unicellular in structure

Endocrine glands have no ducts. Endocrine glands secrete substances (hormones) into blood without the use of ducts, whereas exocrine glands use ducts to secrete substances into the external environment.

________ epithelium appears to have two or three layers of cells, but all the cells are in contact with the basement membrane. Transitional Stratified cuboidal Stratified columnar Pseudostratified columnar

Pseudostratified columnar

Which of the following statements is INCORRECT? Mucous membranes line exits and entrances to the body. Serous membranes line body cavities and organs. The cutaneous membrane is a dry membrane exposed to air. The cutaneous membrane is made of a simple columnar epithelium

The cutaneous membrane is made of a simple columnar epithelium The cutaneous membrane, a "dry" membrane exposed to air, consists of a keratinized, stratified squamous epithelium called the epidermis, and an underlying layer of connective tissue called the dermis.

The shape of the external ear is maintained by ________. adipose tissue hyaline cartilage elastic cartilage fibrocartilage

elastic cartilage

Which tissue type consists of a sheet of cells that covers a body surface or lines a body cavity? muscle tissue connective tissue epithelial tissue nervous tissue

epithelial tissue Epithelial tissue is a sheet of cells that covers a body surface or lines a body cavity (epithe = laid on, covering). In addition to coverings and linings, epithelial cells can also form glands, called glandular epithelium.

Intercalated discs and striations are both characteristic of skeletal muscle.

false

Tendons and ligaments are composed mainly of dense irregular connective tissue.

false

All muscle cells contain striations.

false Smooth muscle cells do not contain striations. Although they do contain myofilaments, their arrangement is not regular enough to generate the striations seen in skeletal or cardiac muscle cells.

You observe a tissue under a microscope. There appears to be a lumen on one side of the tissue. Lining this lumen, the cells seem to have long, fingerlike projections. Beneath the projections, the cells seem to have the shape of shoeboxes and are packed tightly together. What type of tissue are you looking at? simple cuboidal epithelia transitional epithelia stratified squamous epithelia simple columnar epithelia

simple columnar epithelia The shoebox represents the columnar shape. Additionally, the fingerlike projections are likely to be microvilli.

Which of the following epithelia forms the walls of the air sacs across which gas exchange occurs in the lungs? simple columnar simple cuboidal simple squamous pseudostratified columnar

simple squamous

What function do transitional epithelia have? absorption filtration resistance to friction stretching

stretching Transitional epithelium is found in the urinary system. It lines the ureters, bladder, and proximal part of the urethra--organs that are subjected to distention or stretching as urine passes through or fills them.

Groups of cells that are similar in structure and perform a common or related function form a(n) ________. organism organ organ system tissue

tissue

A smooth muscle cell has a central nucleus but lacks striations.

true

Blood is considered a type of connective tissue.

true

The shock-absorbing pads between the vertebrae are formed of fibrocartilage.

true