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