Exam 1

A cell responsible for secreting the matrix of cartilage is
Osteoblast
Chondrocyte
Osteoclast
Osteocyte
In the cell life cycle, DNA is replicated during
Prophase II
Interphase G1
Prophase 1
Interphase S
A type of connective tissue that is NOT connective tissue proper is
Cartilage
Adipose tissue
Areolar tissue
Dense irregular tissue
Which of the following events occurs during prophase of (mitosis)=
Chromatids are serperated to opposite sides
Chromatin condenses
Chromain extends
Nucleus- re- forms
In appositional growth of cartilage, which cells divide and secrete new matrix
Osteoblasts
Chondrocytes
Chondroblasts
Osteogenic cells
Epiphyseal plates remain the same thickness throughout elongation of long bones due primarily to equal rates of growth as these two zones
Classification & ossification zones
Prolifertion & hypertrophic zones
Hypertrophic & calcification zones
Proliferation & ossification zones
Once surrounded by the bone matrix, osteoblasts become
Mesenchyme cells
Osteocytes
Osteoclasts
Chondrocytes
The type of skin cancer derived from keratinocytes stem cells in the stratum basale which fall to die apical to the stratum granulosum, continuing mitosis while spreading through the stratum corneum, is
Basal cell carcinoma
Maligant melanoma
squamous cell carinoma
Leucopenia
Which of the following is NOT associated with connective tissue
Collagen
Goblet cells
Chondrocytes
Areolar
The type of cartilage that forms the embryonic skeleton is
Elastic cartilage
Calcified cartilage
Hayline cartilage
Fibrocartilage
Osteoblasts are cells which develop from stem cells present in this embryonic tissue
Ectoplasm
Mesenchyme
Ectoderm
Neurochyme
Melanin, produced by melanocytes, absorb potentially harmful UV energy from the sun, however a beneficial substance in the body is made from those very same UV energy rays. What substance is produced by the skin after absorbing UV radiation
Vitamin A
Vitamin D
Vitamin b12
Vitamin E
Trabeculae of spongy bone are covered by this membrane which contains a collection of osteoblasts
Periosteum
Osteosteum
Sharpey's membrane
Endosteum
In the process of phagocytosis the organelles with enzymes that break down ingested foreign cells are the
Phagosomes
Peroxisomes
Smooth endoplasmic reticulum
Lysosomes
A keratinocyte that contains pre-keratin but no lamellated granules is from the
Stratum corneum
Stratum spinosum
Stratum basale
Stratum granulosum
Mesothelioma litigation commercial air on television quite frequently. Which of the following is the best description of the mesothelium
The visceral serous memebrane that lines the thoracic cavity
The lining of the airways inside the lung, where asbetos gets stuck
Simple squamous epithelium as part of a serous membrane
The cavity existing betweeen the pleural cavities of the thoracic cavity
A function of the perichondrium is to
Secrete new matrix
Provide a site for interstitial growth
Surround the matrix to prevent the piece of cartilage from bursting when compressed
Bind the cartilage to adjacent bones
Which membranous organelle stores calcium
Endpoplasmic recticulum
Golgi apparatus
Peroxisomes
Mitochondria
Connective tissue that must resist forces pulling it from many different directions without stretching would most likely be
Areolar connective tissue
Dense regular connective tissue
Reticular connective tissue
Dense irregular connective tissue
A simple squamous epithelium together with a small amount of connective tissue, covering the exterior surface of the heart would most correctly be termed the
Parietal peritoneum
Visceral pericardium
Parietal pericardium
Visceral peritoneum
Functions of the golgi apparatus include all of the following except
Synthesis of lysosomes
Production of secretory vesicles
Plasma membrane formation
DNA replication
Osteoblasts develop directly from
Osteoblasts
Blood stem cells
Osteocytes
Osetogenic cells
A highly branched gland whose walls do not balloon into spherical sacs is called
Compound alveolar
Compound tubuloalveolar
Simple alevolar
Compound tubular
Which of the following cytoskeleton fibers are used to position organelles in the cell and are also active in attaching to chromosomes during mitosis
Intermediate filaments
Microfilaments
Microtubules
Collagen
Which of the following organelles is NOT in the pathway of protein production
Smooth endoplasmic reticulum
Golgi apparatus
Rough endoplasmic reticulum
Ribosomes
The epidermis is a ____ epithelium
Simple squamous
Compound columnar
Simple areolar
Stratified squamous
In growing cartilage, this type of growth occurs due to the activity of chondroblasts
Interstitial growth
Calcification
Endochondral growth
Appositional growth
Which type of epithelium is functionally important in terms of allowing diffusion and filtration
Simple squamous
Simple columnar
Pseudostratified columnar
Simple cuboidal
Ligaments consists primarily of which kind of connective tissue
Cartilage
Loose areolar
Dense regular
Dense irregular
A hormone that increases the activity of osteoclasts is
Parathyroid hormone
An androgen (male sex hormones)
Thyroid hormone
An estrogen (female sex hormones)
The cell responsible for secreting the matrix of bone is the
Osteoblasts
Osteoclasts
Osteocyte
Chondrocyte
In connective tissue, the main extracellular material for resisting tension is
Intermediate filaments in fibroblasts
Collagen
Elastin
The mineral in bone
During endochondral bone growth, the reason the chondroblasts are stacked together in the growth zone is due to this portion of the cell cycle being rather non-existent
Interphase S
Interphase G1
Mitosis
Interphase G2
Which of the following is NOT a destination of products existing the golgi apparatus
Cytoplasmic proteins
Membrane proteins
Secreted proteins
Lysosomal proteins
In connective tissue proper, ground substance is manufactured and secreted by which type of cell
Fibroblast
Endothelial cell
Plasma cell
Mast cell
Of the following basic types of tissue, the one with the least extracellular material is
Areolar
Epithelial
Connective
Bone
The cartilage of the epiphyseal plates is organized into zones based upon the processes occurring in those regions. Identify the correct sequence of these zones from the epiphyseal end toward the diaphysi
Resting-growth-hypertrophy-classification-ossification
Resting-hypertrophy-growth-calcification-ossification
Hypertrophy-ossification-resting-calcification-growth
Growth-calcification-resting-hypertrophy-ossification
The type of cartilage is the epiglottis
Hayline cartilage
Elastic cartilage
Fibrocartilage
Calcified cartilage
Which of the following is NOT a characteristic of epithelia
Vascular
Specialized cell-cell junctions
Innervated
Highly cellular with little extracellular matrix
Which category of regeneration capability is cartilage placed in, and what is the main reason for this
Good- cells are still capable of mitosis
Poor- too much ground substance
Poor- no direct blood supply to the cells
None- chondrocytes cease mitosis ability
Which of the amazing properties of epithelium describes the way in which one surface, such as the apical, differs greatly from another surface, such as the basal
Polarity
Cellularity
Innervated
Avascular
Who proposed that all living organisms are composed of cells, that the cells is the basic unit of life, and furthered the cell theory during the 1800s
Loius pasteur
Rudolf virchow
Robert captain hooke
Schleiden & schwann
Epithelial tissue is excellent at regeneration. Which of the following tissues is NOT good-to-excellent at regeneration when damaged
Skeletal muscle
Blood
Smooth muscle
Bone
Which of the following cytoskeleton fibers are the most permanent
Microtubules
Intermediate filaments
Microfilaments
Centrioles
Phospholipids of the plasma membrane are arranged
With their hydrophillic cells
Which of the following most accurately describes where cells junctions occur in the plasma membrane of
Lateral
Basial lamina
Apical
Nuclear
Which of the following is associated with protein synthesis
Chloroplasts
Smooth endoplasmic reticulum
Mitochondira
Ribosomes
Which type of lateral surface junctions is responsible for sealing the space in between neighboring cells of the epithelium, so that nothing leaks in between the cells
Desmosomes
Gap junctions
Adherens
Tight junctions
During what phase of mitosis does the nucleus reforms and chromatin extend
Anaphase
Late prophsae
Metaphase
Telophase
This membranous organelle is the site of energy production in the cell (short answer)
Mitochondria
Peroxisome
Adenosine
Rough endoplasmic reticulum
The plasma membrane is primarily composed of this specific type of liquid molecule (short answer)
Cholesterol
Proteins
Phospholipids
When a cell ingests a foreign cell, the vesicle fuses with this organelle for degradation (short answer)
Lysosomes
Ribosomes
Endoplasmic reticulum
Mitochondria
This connective tissue gains its strength from the many collegen fibers oriented in the same direction (short answer)
Loose connective tissue
Dense fibrous
Dense irregular
Dense regular
This orgnelle helps protect the cell from damage caused by oxidation (short answer)
Mitochonrdria
Peroxisome
Ribosomes
Lysosomes
Which week of embryonic development is associated with the formation of the 3 germ layers from thr hypoblast and epiblast
4th week
3rd week
2nd week
5th week
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