Check Your Recall 4-6

Which of the following factors influences the rate at which diffusion takes place? a) Size of the particles b) Temperature c) Steepness of the concentration gradient d) all the above

d) all the above

What happens during S phase of the cell cycle? a) The cell divides b) The cell undergoes its final preparation for division c) The cell undergoes its initial growth phase d) The cell replicates its DNA

d) the cell replicates its DNA

Stratified squamous nonkeratinized epithelium

oral cavity, pharynx, vagina, anus

Loose CT

part of the basement membrane, walls of hollow organs

An epithelial tissue that has one layer of rectangular cells would be classified as

simple columnar epithelium

Reticular CT

spleen and lymph nodes

Which layers of the epidermis contain living cells?

stratum basale, stratum spinosum, and stratum granulosum

______________ corpuscles in the dermis detect fine touch

tactile

Dense regular collagenous CT

tendons and ligaments

Transitional epithelium

urinary bladder

Osmosis is the movement of

water molecules from a high concentration to a low concentration

Which characteristics apply to the skeletal muscle tissue?

Striated, multinucleate, voluntary

(T/F) A hair follicle is composed of epithelium and connective tissue

T

(T/F) Adipocytes contain a large lipid droplet in their cytoplasm

T

(T/F) Both hairs and nails are composed primarily of dead keratinocytes

T

(T/F) Loose connective tissue contains all three protein fiber types

T

_______________ corpuscles in the dermis detect pressure

Lamellate

Smooth muscle

Lining hollow organs, in the skin, eye, and surrounding many glands

What are the three basic components of most cells?

Cell membrane, nucleus, cytoplasm

Nervous tissue is composed of __________ and two types of cells: __________ and ___________

ECM; neurons, neurological cells

(T/F) An arrector pili muscle is composed of skeletal muscle tissue

F

(T/F) Bundles of collagen fibers are arranged parallel to one another in dense irregular collagenous connective tissue

F

(T/F) Fibrocartilage has a smooth, glassy appearance due to a large amount of ground substance and a few visible protein fibers

F

(T/F) The dividing cells of a nail are located in the eponychium

F

(T/F) The primary element in dense regular collagenous connective tissue is ground substance

F

What is the function of intercalated discs?

To link all cardiac myocytes physically and electrically so that the heart may contract as a unit

From where do the cells of the epidermis obtain oxygen and nutrients? a) From blood vessels in the epidermis b) Diffusion from blood vessels in the dermis c) Diffusion from the air d) From blood vessels in other epithelial tissues

a) From blood vessels in the epidermis

Which of the following are characteristics of thick skin? (Select all that apply) a) Located over the palms and the soles of the feet b) Contains hair and arrector pili muscles c) Contains sweat glands d) Very thick stratum corneum e) Contains sebaceous glands f) Contains a stratum lucidium

a) Located over the palms and soles of the feet d) Very thick stratum corneum f) Contains a stratum lucidium

Eccrine sweat is released into a ____________, and sebum is released into a ____________. a) a duct; a hair follicle b) a hair follicle; a blood vessel c) a duct; a blood vessel d) a hair follicle; a duct

a) a duct; a hair follicle

The mitotic spindle fibers are composed of a) microtubules b) microvilli c) intermediate filaments d) actin filaments

a) microtubules

Simple squamous epithelium

air sacs of lungs

Diffusion is the movement of molecules from

an area of high concentration to an area of low concentration

Which of the following best characterizes the extracellular matrix (ECM) of bone tissue? a) Bone tissue ECM consists of only calcium hydroxyapatite crystals b) Bone tissue ECM consists of calcium hydroxyapatite crystals and collagen fibers c) Bone tissue ECM consists of only collagen fibers d) Bone tissue ECM consists of collagen, elastic, and reticular fibers

b) Bone tissue ECM consists of calcium hydroxyapatite crystals and collagen fibers

Nervous tissue

brain, spinal cord, peripheral nerves

The primary protein produced by the main cell type in skin is a) actin b) melanin c) keratin d) collagen

c) keratin

Which of the following is the primary component of the plasma membrane? a) Cholesterol b) Glycolipids c) Phospholipids d) Integral Proteins

c) phospholipids

In which layer of the epidermis are melanocytes found? a) stratum corneum b) stratum granulosum c) stratum basale d) stratum lucidium e) stratum spinosum

c) stratum basale

All tissues consist of two main components: _____________ and __________, which consists of a gelatinous substance called _______________ and numerous different ____________

cells; extracellular matrix; ground substance; protein fibers

Cardiac muscle

in the heart

Hyaline cartilage

joints, connecting the ribs to the sternum, nose