Exam 2

Front 1

Formed elements of blood include all of the following except for the

a) red blood cells b) white blood cells c) platelets d) blood plasma

Back 1

D

Front 2

Bone, cartilage, and blood are specialized types of ______________ tissue.

a) Epithelial b) connective c) muscular d) nervous

Back 2

B

Front 3

During the contractions of a skeletal muscle, the: a) A band becomes shorter b) H zone becomes larger c) the Z disks move apart d) I bands become smaller

Back 3

D

Front 4

A ___________ membrane is an epithelial membrane that lines a body cavity open to the external environment.

a) mucous b) serous c) cutaneous d) synovial

Back 4

A

Front 5

An epithelium that consists of 2 or more layers of cells is a _________________.

a) simple epithelium b) pseudostratified epithelium c) cuboidal epithelium d) stratified epithelium

Back 5

D

Front 6

A ________________ is a junction between adjacent cells in which the transmembrane linker proteins are anchored to the microfilaments of the cytoskeleton of the 2 cells.

a) tight junction b) adherens junction c) desmosome d) gap junction

Back 6

B

Front 7

The type of tissue that covers organs and lines internal cavities are:

a) epithelial tissue b) connective tissue c) muscle tissue d) nervous tissue

Back 7

A

Front 8

Which of the following kinds of cells are highly specialized for receiving stimuli?

a) adipose tissue b) stratified squamous epithelium c) neurons d) hyaline cartilage

Back 8

C

Front 9

The tissue that forms glands are:

a) epithelial tissue b) connective tissue c) nervous tissue d) muscle tissue

Back 9

A

Front 10

Epithelial tissues are classified by:

a) the arrangement and density of their fibers b) the arrangement and shape of the cells and the number of cell layers c) the size of the nuclei in the cells d) whether of not the cells are striated and have I and A bands

Back 10

B

Front 11

Voluntary, striated muscle is:

a) smooth muscle b) cardiac muscle c) skeletal muscle d) nuroglia

Back 11

C

Front 12

Which of the following is NOT a characteristic of epithelial tissue?

a) it has close-packed cells with little intercellular material b) it consists of continuous sheets of the same kinds of cells c) it has an apical and basal surface d) it has numerous blood vessels but no nerves

Back 12

D

Front 13

Which of the following tissues is avascular?

a) areolar connective tissue b) cardiac muscle tissue c) skeletal muscle tissue d) stratified squamous epithelium

Back 13

D

Front 14

What is the most abundant tissue type in the body?

a) connective tissue b) epithelial tissue c) muscle tissue d) nerve tissue

Back 14

A

Front 15

What is the order of layers of the skin going from the bottom layer to the top layer?

a) basale, spinosum, grandulosum, lucidum, corneum b) corneum, basale, lucidum, spinosum, grandulosum c) lucidum, spinosum, sorneum, grandulosum, basale d) spinosum, lucidum, grandulosum, corneum, basale

Back 15

A

Front 16

The epidermis is made up of?

a) dense irregular connective tissue b) stratified squamous epithelium c) areolar connective tissue d) smooth muscle

Back 16

B

Front 17

The function of keratin is to:

a) make bone hard b) make skin tough and waterproof c) protect skin from ultraviolet lights d) provide nourishment to the epidermal cells

Back 17

B

Front 18

Cells in the epidermis that arise from red bone marrow are the:

a) keratinocytes b) merkel cells c) langerhan cells d) melanocytes

Back 18

C

Front 19

“Goosebumps” occur due to:

a) over-stimulation of secretion from sudoriferous glands b) over-stimulation of secretions from sebuscous glands c) separation of the epidermis from the dermis d) the action of arrector pili muscles as they raise hairs to an upright position

Back 19

D

Front 20

The stratum basale contains?

a) stem cells of kerantinocytes b) many blood vessels c) eccrine sweat glands d) nail matrix

Back 20

A

Front 21

The thickened part of the nail just prior to the root is called?

a) nail body b) lanula c) nail root d) nail matrix

Back 21

B

Front 22

The superficial portion of the hair above the skin surface is called the:

a) shaft b) root c) hair follicle d) bulb

Back 22

A

Front 23

Most common epithelial cells in the epidermis are the:

a) keratinocytes b) melanocytes c) Langerhans cells d) merkel cells

Back 23

A

Front 24

A skin gland that produces oil is a ________ gland.

a) sebaccous b) sudoriferous c) ceruminous d) mammary

Back 24

A

Front 25

The epithelial cells in the epidermis that produces pigmentary protein are the:

a) kerantinocytes b) melanocytes c) langerhans cells d) merkel cells

Back 25

B

Front 26

Which of the following tissues of the skeleton has the greatest strength?

a) compact bone b) spongy bone c) cancellous bone tissue d) hyaline catilage

Back 26

A

Front 27

The ____________ is a sensory neuron associated w/ a hair follicle.

a) Papilla of the hair b) hair root matrix c) arrector pili d) hair root plexus

Back 27

D

Front 28

The fibrous covering around the bone that consists of connective tissue containing blood vessels and nerves is called the ______________.

a) endosteum b) epiphyses c) periosteum d) medullary cavity

Back 28

C

Front 29

Which of the following tissues of the skeleton has the greatest strength w/ the least weight?

a) compact bone b) spongy bone c) dense bone tissue d) hyaline cartilage

Back 29

B

Front 30

The channel that connect lacunae in a bone are called the:

a) canaliculi b) central canals c) volmann's canals d) circumferential lamellae

Back 30

A

Front 31

A fracture in the shaft of a bone would break in the:

a) epiphysis b) metaphysis c) diaphysis d) articular cartilage

Back 31

C

Front 32

The structural unit of a long bone is called the:

a) an osteon b) a lacunae c) a circumferential lamellae d) an osteocyte

Back 32

A

Front 33

Yellow bone marrow contains large amounts of:

a) adipose tissue b) metaphysis c) diaphysis d) articular cartilage

Back 33

A

Front 34

The function of osteoclasts is to:

a) breakdown bone b) produce new bone c) produce blood cells d) produce collagen fibers

Back 34

A

Front 35

The marrow-filled space w/in diaphysis of a long bone is the:

a) articular cartilage b) metaphysis c) epiphysis d) medulary cavity

Back 35

D

Front 36

Ossification is the process by which:

a) the bones receive nourishment b) cartilage is replaced by bone c) nerves stimulate muscle contractions d) bones are dismantled and become porous

Back 36

B

Front 37

The connective tissue that surrounds many bundles of muscle fibers is called:

a) endomysium b) perimysium c) superficial fascia d) epimysium

Back 37

D

Front 38

Endochondrial ossifications involves the replacement by bone of:

a) blood b) lymph c) epithelial tissue d) cartilage

Back 38

D

Front 39

The distal or proximal end of a long bone is the: a) diaphysis b) epiphysis c) metaphysis

Back 39

B

Front 40

The central structure of an osteon in compact bone is the:

a) central canal b) lacuna c) canaliculus d) concentric lamella

Back 40

A

Front 41

The zone of hyaline cartilage in a long bone that is responsible for growth in length is the:

a) diaphysis b) epiphysis c) periosteum d) epiphyseal plate

Back 41

D

Front 42

The connective tissue that surrounds individual bundles of muscle fibers is called:

a) endomysium b) perimysium c) deep fascia d) epimysium

Back 42

B

Front 43

A bundle of muscle cells is called a:

a) fascicle b) myofiber c) epimysium d) sacromere

Back 43

A

Front 44

Myofibrils are:

a) muscle cells b) rod-like super organelles found in muscle cells c) the separation between sacromeres within muscle cells d) contain only thick filaments

Back 44

B

Front 45

There are a series of striations in skeletal muscle. The light areas in these structures are called:

a) myosin heads b) myofilaments c) A bands d) I bands

Back 45

D

Front 46

The structures that function to synchronize muscle contractions are the:

a) sarcoplasm b) myosin head c) T-tubules d) sarcoplasmic reticulum

Back 46

C

Front 47

During which step does the muscle cell actually shorten?

a) cross bridge attachment b) power stroke c) cross bridge detachment d) cocking of myosin head

Back 47

B

Front 48

What happens when muscle tension equals muscle load?

a) a muscle twitch b) an isotonic contraction c) an isometric contraction d) tetanus occurs

Back 48

C

Front 49

A motor unit is composed of:

a) a motor neuron and its associated muscle fibers b) all of the motor neurons that are in a single nerve c) a group of muscle fibers that are within the same fascicle d) all of the motor neurons and muscle fibers in a single muscle

Back 49

A

Front 50

During the contractions of a skeletal muscle, the:

a) A band becomes shorter b) H zone becomes larger c) Z disks become closer d) I band becomes larger

Back 50

C