Week 1 Seminar Q&A Starting from Ch 3

The function of the nucleolus is

productions of ribosomes

The site of protein synthesis in a cell is the

ribosome

Sweat: (choose all that apply)

*functions to cool the body * is a form of excretion * contains salts and wastes

Characteristics that are true of stratified epithelium (select all that apply)

*named for the shape of the cells *secretion and protection *undergoes mitotic cell division to replace cells that are list at the surface

Name two classes of epithelial tissue determined by the number of cell layers

*simple *stratified

The integumentary system consists of

*the skin * hair & nails * sebaceous & sweat glands

The cells of the epidermis die as they are pushed towards the surface of the skin bacause

*they fill with melanin *they are killed by pathogens * they are too far from their nutrient supply

Match the layer with the appropriate description; Epidermis Dermis

*thin outer layer *thicker inner layer

The selectively permeable barrier that regulates the passage of materials onto and out of the cell is the

plasma membrane

The main function of the rough ER is _________ synthesis while the main function of the smooth ER is ______ synthesis.

protein; lipid

Sebum is produced by the ________ glands

sebaceous

Simple epithelium tissue differs from stratified epithelium in the fact that simple epithelium consists of ______ layer(s) of cells while stratified epithelium consists of ______ layer(s) of cells.

single; multiple

CH 4 Which of the following is considered voluntary and enables movement of the head, trunk, and extremities?

skeletal muscle tissue

What stratum of the epidermis is composed of primarily dead cells that eventually slough off?

stratum corneum

Like tears, ____ is mostly water, but also contains small amounts of salt and wastes such as urea.

sweat

The excretion called _____ is composed of water with some salts and wastes, such as urea.

sweat

______ glands play a vital role in thermoregulation

Sweat

The functions of the epidermis include all of the following except:

Temperature regulation Temp. regulation occurs through the dilation and constriction of blood vessels. Which layer of the skin is associated with blood vessels.

CH 5 Nutrient and oxygen supply for the epidermis is from blood vessels located in the ______

dermis

The ______ stem cells divide repeatedly and produce many generations if cells

embryonic

The ____ _____ is a group of membranes that extend out from the nucleus throughout the cytoplasm allowing for structural support and efficient movement of materials within the cell.

endoplasmic reticulum

The layers of skin called the _____ lacks blood vessels

epidermis

Within the skin, the_______ is composed of stratified squamous epithelium

epidermis

The ______ is composed of stratified squamous epithelium while the ____ is mainly made up of fibrous connective tissue.

epidermis, dermis

True or False One of the fibers found in the matrix of connective tissue is collagenous fibers

True

Identify the various types of muscle tissue

Cardiac Skeletal Smooth

Match the following: Fibro- epi- pseudo- neuro- oss- cyt-

Fiber Upon False Nerve Bone Cell

List the functions of the epithelial tissues

Filtration Absorption Protection

What is the labeled structure

Hair folicle

______ are specialized cells in the epidermis that produce the pigment, melanin.

Melanocytes

Select the four basic types of tissue

Muscle Nerve Connective Epithelial

Which part of the nail inserts into the dermis?

Nail root

What structures of the fingers and toes are made up of keratinized cells?

Nails

Mitochondria, golgi complex and the ribosomes are all examples of:

Organelles

The epidermis is ____ to the dermis

Superficial

Which of the following are characteristic of epithelial tissue?

Choose all that apply answers: The cells are packed together. The surface of the tissue opposite the basement membrane is not attached to other tissue. The cells are attached by a noncellular basement membrane.

Which general type of tissue performs the following function: fat storage, body defense, tissue repair, production of blood cells, and support?

Connective

Which tissues are made up of cells and extracellular matrix?

Connective

Epithelial tissue is classified based upon the number of layers of cells and the shape of the surface cells. List the SHAPES of cells by which epithelial tissue is classified. (Choose all that apply)

Cuboidal Columnar Squamous

Select the regions where you would expect to find an abundance of apocrine sweat glands

*Axillary region *Genital region

Which of the following statements are true of the dermis?

*It is vascular *It is composed of fibrous connective tissue *it has collagen and elastin fibers

Epithelial tissue is primarily classified according to:

*Layers of cells *Shape of cells

_____ connective tissue contains fat cells and also serve to protect internal organs.

Adipose

Which of the following is true of BOTH apocrine and eccrine sweat glands?

Both are tubular ducts with a coiled portion located in the dermis

In _______ muscle tissue there are intercalated discs between each cell

Cardiac

The body tissue that covers the surfaces of the body, lines body and organ cavities and forms part of the secretory glands is _____ tissue.

Epithelial

True or False The type of tissue that is found where diffusion, secretion or filtration occur in the body is stratified epithelium?

False

Which of the following is not a true ayer of skin

Hypodermis

List the characteristics of connective tissue: (select all that apply)

Serves as a transportation route for invading microorganisms. Bind other tissue and organs together involved in delivering nutrients to the tissue

Which of the following are characteristics of simple squamous epithelium? (Select all that apply)

Single layer of cells cells are thin and flat aid diffusion, osmosis and filtration

Facial expression, chewing and breathing are accomplished by _____ muscle tissue

Skeletal

Identify the structures indicated in this picture of smooth muscle tissue

a nucleus b cytoplasm

Identify the the components of the plasma membrane (matching)

a. phospholipid bilayer b hydrophobic nonpolar fatty acid tails c channel protein d hydrophilic polar phosphate head e cholesterol f peripheral protein

Ducts from the _______ sudoriferous (sweat) glands empty into hair follicles, while ducts from _____ sudoriferous (sweat) glands empty onto the surface of the skin.

apocrine, eccrine

What type of modified sweat glands produce wax in the eat canal?

ceruminous glands

The type of tissue that responsible for detecting and responding to environmental change is_______

nervous

Ribosomes are synthesized in the _____ before migrating to the cytoplasm

nucleolus