Which of the following tissues is avascular

11 Jun Which of the following tissues is avascular

Question
1. Which of the following tissues is avascular?

muscle tissue

dense irregular connective tissue

bone and cartilage

epithelial and cartilage

nervous tissue and bone

One might expect to see microvilli on epithelial tissues whose principal functin is:

mineral storage

absorption

movement

transmission of electrical impulses

protection

Transitional Epithelium is found in the:

air sacs of the lungs

urinary bladder

upper respiratory tract

lining of heart and blood vessels

skin

Goblet cells produce

mucus

sweat

milk

digestive enzymes

hormones

Which one of the following does not have an abundance of collagen fibers?

cartilage of the external ear

dermis of skin

Achilles tendon

cartilage of the nose

patellar ligament

All glands that release their products by way of ducts, rather than directly into the bloodstream, are called ___ glands.

endocrine

apocrine

holocrine

autocrine

exocrine

Cilia are most likely to be seen on ___ epithelium.

pseudostratified

stratified squamous

simple squamous

transitional

stratified cuboidal

Which two muscle types are controlled involuntarily?

cardiac and skeletal

skeletal and smooth

intestinal and skeletal

smooth and cardiac

striated and smooth

Which of the following is/are voluntary muscle?

smooth muscle

skeletal muscle

visceral muscle

cardiac muscle

intestinal muscle

___ are single mucus-secreting cells found in the epithelia of many mucous membranes.

Mast cells

Myocytes

Histiocytes

Goblet cells

Endocrine cells

The epidermal water barrier is formed at the point where epidermal cells

exfoliate

pass from stratum baslae to stratum basals

enter the telogen phase

pass from stratum spinosum to stratum granulosum

form the epidermal ridges

The hairs growth center can be found in the

its cortex.

the arrector pili.

the epithelial root sheath.

matrix

the dermal papilla.

An individual has a yellowing of both the skin and whites of the eyes. The individual most likely has _____, which is caused by high levels of _____ in the blood.

enythema, oxygen-rich hemoglobin

jaundice, bilirubin

bronzing, carotene

pallor, melanin

cyanosis, oxygen-poor hemoglobin

In cold weather, ___ may result from reduced blood circulation through the skin.

cyanosis

jaundice

erythema

hemangioma

hypothermia

This layer contains areolar and adipose connective tissue, has a tendency to store fat, and is an area where drugs are commonly injected because of its high vascularity.

hyperdermis

hypodermis

papillary layer of dermis

epidermis

reticular layer of dermis

Select the most correct statement concerning skin cancer.

squamus cell carcinomas arise from the stratum corneum

most tumors that arise on the skin are malignant

none of the above

basil cell carcinomas are the least common but most malignant

malignant melanomas arise from melanocytes or a preexisting mole and must be removed quickly to prevent them from matastasizing

The contraction of the piloerector muscles (arrector pili) in humans causes

generation of heat to raise the body temperature.

hairs to stand on end with no apparent function.

increased ability to feel pain.

hairs to stand on end trapping air, which is used as insulation.

hairs to stand on end to make the individual appear bigger.

The epithelium of the epidermis is best described as

keratinized stratified squamous.

keratinized stratified cuboidal.

callused stratified squamous.

nonkeratinized stratified cuboidal.

nonkeratinized stratified squamous.

When a fair-skinned person blushes, why does his or her skin turn red?

the blood supply to the skin decreases

the blood supply to the skin increases

the number of red melanocytes in the skin increases

melanocytes increase production of red pigment

increased heat causes the skin to turn red

In thin skin, the ___ is absent.

hypodermis

papillary layer of the dermis

stratum lucidum of the epidermis

stratum corneum of the epidermis

reticular layer of the dermis

Tissue that is specialized for the conduction of electrical impulses is ________ tissue.

connective

areolar

neural

osseous

epithelial

Accumulations of fluid within the epidermis or between the epidermis and the dermis is/are called

scars.

pus.

blisters.

keloids.

scabs.

Microscopic examination of a tissue reveals a loose framework of fibers embedded in a large volume of fluid ground substance and adipocytes and mast cells fibers. This tissue would most likely have come from the

bony socket of the eye.

lungs.

spleen.

inner wall of a blood vessel.

superficial fascia between skin and muscle.

A child who skins his knee in a fall has a(n)

contusion.

laceration.

puncture.

abrasion.

incision.

The cuticle around a nail is the

perinychium.

hyponychium.

lunula.

free edge.

eponychium.

Cells that engulf bacteria or cell debris within loose connective tissue are

macrophages.

mast cells.

adipocytes.

fibroblasts.

melanocytes.

The ________ in keratinocytes protects the epidermis and dermis from the harmful effects of sunlight.

carotene

melanin

sebum

keratin

hemoglobin

The skin appearance that results from dark-red hemoglobin is called

cyanosis.

pallor.

freckles.

jaundice.

erythema.

Which of the following connective tissue cells produces collagen?

lymphocytes

macrophages

adipocytes

fibroblasts

mast cells

The serous membrane lining the abdominal cavity is the

pericardium.

peritoneum.

pleura.

periosteum.

perichondrium.

Rapid water loss from burned skin is an extreme form of ________ perspiration.

insensible

imprudent

non-sense

impractical

vacuous

Watery perspiration is an example of a(n) ________ secretion.

merocrine

serous

mucous

apocrine

holocrine

The pigment found in vegetables that can make the skin appear orange or yellow is called

hemoglobin.

carotene

keratin.

melanin.

cadmium.

notsure

Antibodies are produced by

fibroblasts.

mast cells.

plasma cells.

microphages.

macrophages.

The most common type of cartilage is ________ cartilage.

hyaline

ligamentous

fibrous

osseous

elastic

The muscle tissue that shows no striations is ________ muscle.

multinucleated

cardiac

voluntary

smooth

skeletal

Which of the following refers to the dense connective tissue that surrounds a muscle and blends with the tendon?

subserous fascia

superficial fascia

subcutaneous layer

deep fascia

hypodermis

A gland formed by cells arranged in a blind pocket with a single unbranched duct would be called

compound tubular.

simple tubular.

compound alveolar.

tubuloalveolar.

simple alveolar.

Cells that are specialized for secretion

are found only in the digestive system.

have a free surface that is flat.

are usually squamous.

exhibit polarity.

have a small nucleus

The term transudate describes fluid associated with

mucus membranes.

serous membranes.

mammary glands.

cutaneous membranes.

endocrine glands.

If a person is homozygous for a certain trait, he or she has

polygenic inheritance of that trait.

identical loci for that gene.

homologous chromosomes for that trait.

haploid genes for that trait.

identical alleles for that gene.

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In the nucleotide or base sequence of the DNA strand uses as a template for mRNAsynthesis is ACGTT, then the sequence of ases in the correspongd mRNA would be

In the nucleotide or base sequence of the DNA strand uses as a template for mRNAsynthesis is ACGTT, then the sequence of ases in the correspongd mRNA would be

none of the above

TGCAA

ACGTT

UGCAA

GUCAA

In a cell cycle, a cell leaving the M phase has ______ DNA molecules, while a cell leaving the S phase has _____ DNA molecules.

46; 92

46; 23

46; 46

23; 23

23; 46

When the mRNA leaves the nucleus after the transcription phase of protein synthesis, it will enter the cell cytoplasm and bind with?

smooth ER

peroxisomes

the cytoskeleton

lysosomes

a ribosome

Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the parents.

True

False

The function of tRNA is to bring specific amino acids to the growing peptide chain during tranlation.

True

False

The process of translation produces

DNA.

tRNA.

pre-mRNA.

a polypeptide.

rRNA.

Transcription occurs in the ______, while most translation occurs in the _____.

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