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A&P
Exam 1
| Question | Answer |
|---|---|
| What are the three germ layers? | Endoderm, Mesoderm, Ectoderm |
| Five functions of epithelium tissues | Protection, filtration, absorption, secretion, excretion |
| Two types of epithelial tissue | Covering and Lining, glandular |
| What happens with passive transport | particles move along a concentration gradient or pressure gradient |
| Epithelial tissues are _________ | avascular |
| When sodium levels are at or above homeostatic levels in the blood, our kidneys help reduce absorption of sodium ions back into the blood. This is an example of a ___ feedback mechanism | negative |
| Because epithelial tissues are ___ they are dependent in nutrients and oxygen from the nearby connective tissue | avascular |
| Please define tissue | Tissue is a group of cells similar in both structure and function |
| Positive feedback mechanisms tend to exacerbate the original stimulus or the initial response to the stimulus | True |
| a major function of serous membranes is to increase friction | False |
| If an epithelial tissue is specialized in absorbing material from a lumen, the cells of this epithelial tissue must have ___ | Microvilli |
| The dorsal body cavity is the site of which of the following | brain |
| Example of negative feedback system | Regulation of body tempertaure |
| Example of a regulated variable | Temperature |
| Receptor (sensor) | Monitors changes in environment |
| Respiratory System | Supply body with oxygen and eliminates carbon dioxide waste |
| Lymphatic System | Defend the body from disease |
| Digestive System | Breaks down food |
| Integumentary System | Separates the body's internal environment from the external environment |
| Muscular System | Provides locomotion |
| Effector | Provides the means to respond stimulus |
| Control center | Determines the set point and appropriate system response |
| Embryology concerns the structural changes that occur in an individual from conception through old age | False |
| Unlike multicellular exocrine glands, all endocrine glands lack ____ | Ducts |
| Another name for the simple squamous epithelial layers that lines the lumen of blood vessels is _____ | endothelium |
| This epithelial tissue is not ciliated. Its cells in the basal layer look cuboidal, but closer to the apical surface cells look flat. This epithelial tissue is called _____ epithelial tissue | Stratified squamous |
| The anatomical position is characterized by all of the following except ____ | palms turned posteriorly |
| ____ epithelial tissue is adapted for reabsorption of electrolytes and glucose in the tubules of the kidneys | simple cuboidal |
| Place in the correct sequence from complex to simplest: Molecules Atoms Tissues Cells Organ | Organ Tissues Cells Molecules Atoms |
| Simple squamous epithelial tissue helps form the ____ capsule in the kidneys | Glomerular (bowen's capsules) |
| Which answer lists correct locations for hyaline cartilage | wall of trachea and costal cartilage in rib cage |
| Cells type to be seen in areolar connective tissue include all except: ____ | Chondrocytes |
| Which answer lists the correct location for transitional epithelium | lining of bladder |
| Mucous membrane (mucosa) | Located in hollow organs that need lubrication and/ or moisture environment |
| Cutaneous membrane | covers the outer surface of the body |
| Mucous membrane (mucosa) | Lines the inside of the hollow organs that open to the body's exterior |
| Serous membrane (serosa) | Lines the ventral body cavity walls and covers the ventral cavity viscera |
| Structural support of the external ear and other structures that need support with flexibility | elastic cartilage |
| Forms much of the fetal skeleton and covers the articular surfaces of long bones | hyaline cartilage |
| Allows blood vessel walls to distend and recoil | elastic connective tissue |
| endocrine glands are often called ducted glands | False |
| The most abundant and strongest fibers are: | collagen fibers |
| The cartilages and epithelia are similar in that both are _____ | tissues |
| Mucous that protects your stomach lining is secreted by specialized type of | Simple columnar epithelial cell...these specialized simple columnar epithelial cells are goblet cells |
| Mast Cells | Secrete histamine |
| Plasma cells | produce antibodies |
| Fibroblasts | produce collagen, elastic and reticular fibers |
| Macrophages | are phagocytic cells that engulf foreign matter |
| adipocytes | store fat molecules |
| Simple columnar epithelium if the digestive tract is characterized by _____ | multivilli |
| The blastocyst, which usually implants in the uterus ~6 days after fertilization | |
| Substances found in sweat include: | water, sodium chloride, ammonia, urea, uric acid, vitamin c and cerumen. |
| Melanocytes are stimulated to multiply by: | |
| The regional term used to designate the back of the elbow is | |
| Hair follicles are formed from | Hair bulb |
| The four primary tissue types that are derived from the three primary germ layers | Epithelial, connective, muscle, and nervous tissues |
| Endothelial cells | |
| Goblet cells | |
| The basement membrane, which defines epithelial boundaries | |
| The three primary germ layers from which all body tissues are derived during organogenesis are the: | |
| The major chemical constituent in hyaline cartilage is | |
| The type of connective tissue that generallyis not vascularzied | adipose tissue |
| Proteoglycans contribute to ground substance. Proteoglycans consist of: | |
| Desmosomes and tight junctions serve to: | |
| As a negative feedback homeostatic control mechanism, declining blood glucose levels causes Alpha cells in the pancreas to release glucagon into the blood. Glucagon, in turn: | |
| Labor is an example of a positive homeostatic control mechanism. The hormone that is primarily responsible for the induction of labor via the stimulation of smooth muscle contractions in the uterus is: | |
| A frontal “cut”, “section”, or “plane” through the body: | divides the body into anterior and posterior parts. |
| During organogenesis, hematopoietic tissue and the blood’s formed elements are derived from: | |
| The regional term used to designate the front of the elbow is: | |
| The regional term used to designate the groin region is | inguinal |
| Parietal serosa refers to: | |
| The DNA in each of our nucleated body cell types contains genes, i.e., nucleotide sequences that code for proteins. Which statement is correct? | |
| Epithelial cells are bound to one another by: | |
| Meissner’s corpuscles are present in the: | |
| A body structure in which pseudostratified ciliated columnar epithelium is found is: | |
| Elastic tissue fibers, which are composed of proteins called elastins, are produced by | |
| Plasma cells: | |
| Aside from water, another major chemical constituent of hyaline cartilage is: | |
| Elastic cartilage: | forms the costal cartilages of the ribs as well as the cartilages of the nose and trachea |
| Goblet cells | |
| Blood is a connective tissue. Its “formed elements” include: | erythrocytes, monocytes, neutrophils, basophils, eosinophils, lymphocytes, and platelets. |
| The type of connective tissue that lacks blood vessels, i.e., is not vascularized, is: | cartilage. |
| Fibrocartilage: | is found in the intervertebral discs, the pubic symphysis, and discs of the knee joint. |
| Cells in the epidermis that decrease in number upon repeated exposure to ultraviolet radiation are: | |
| Cells in the epidermis that decrease in number upon repeated exposure to ultraviolet radiation are: | |
| The regional term used to designate the arm pit is: | axillary. |
| The superior mediastinum: | |
| Cells in holocrine glands accumulate their products until they rupture and release their contents. The example of true holocrine glands in the human body are: | sebaceous glands |
| Sural is the regional term for the: | calf. |
| Antebrachium refers to the: | forearm. |
| The Central Nervous System consists of: | the brain, spinal cord, and cranial and spinal nerves. |
| The regional term that is used for the neck is: | cervical. |
| Which of the following general statements is incorrect? | |
| Normal calcium (Ca++) concentration levels in the blood are about 9-11 mg/100 ml. As a negative feedback homeostatic control mechanism, decreases in blood Ca++: | |
| The ectoderm: | forms all nervous tissue and the epidermis and its derivatives. |
| The human genome contains approximately | |
| Epithelial cells on the basal surface of an epithelial sheet: | |
| A type of epithelial tissue that is found in the larger ducts of sweat glands, mammary glands, and salivary glands is: | |
| Simple squamous epithelial cells that line the internal surfaces of blood vessels and the internal chambers of the heart and that also form lymphatic vessels in the body are called: | |
| Endocrine glands are ductless glands that secrete their products onto epithelial surfaces or into body cavities by exocytosis | |
| Sebaceous glands: | |
| Chondroitin, keratin sulfates, and hyaluronic acid are cell adhesion proteins found in ground substance. | |
| The average adult’s body contains ~40 L of H2O. The volume of water in the body’s interstitial fluid is: | |
| Cells that function in the synthesis, storage, and release of fat are called: | |
| The scientific name for the region beneath the distal free edge of a nail is called the: | hyponychium. |
| Gastrulation is: | the developmental process that produces the three primary germ layers. |
| The regional term used to designate the region between the anus and external genitalia is: | perineal. |
| The regional term for the heel is: | calcaneal. |
| Cells that are present on the surface of the lungs’ air sacs called alveoli are mainly: | simple squamous epithelial cells |
| The regional term for the back of the knee is: | patellar. |
| The basal lamina and the reticular lamina collectively form: | basement membranes |
| Dense regular connective tissue is found in: | tendons. |
| During organogenesis, the connective tissues are derived from embryonic: | mesenchyme |
| The axial skeleton includes: | the skull, vertebral column, and rib cage. |
| Endothelial cells: | are squamous epithelial cells that line the heart’s chambers and blood vessels. |
| Hallux: | pertains to the big toe. |
| The stratum basale of the epidermis consists of: | mitotic stem cells, young keratinocytes, Merkel cells, and melanocytes. |
| In the adult, the skin is renewed approximately: | every 25-45 days. |
| A sagittal “cut”, “section”, or “plane” through the body: | is a vertical plane that divides the body into right and left parts. |
| Merkel cells and associated Merkel discs serve: | to sense touch. |
| The layer of the epidermis in which flattened keratinocytes contain deteriorating organelles, lamellated granules, and keratohyaline granules is the: | stratum granulosum |
| One function of the skin is the synthesis of Vitamin D. Vitamin D is important because it is required for: | the absorption of calcium from the digestive tract. |
| During organogenesis, hematopoietic tissue and the blood’s formed elements are derived from: a | |
| The outermost layer of the epidermis of the skin is called the: | stratum corneum. |
| In the normal adult, the skin ranges form ~1.5 to 4 mm in thickness and contains about 5% of an individual’s blood volume. In the normal adult, the skin weighs about: | |
| In the normal adult, the skin ranges form ~1.5 to 4 mm in thickness and contains about 5% of an individual’s blood volume. In the normal adult, the skin weighs about: | |
| Mechanoreceptors present in the skin that respond to pressure, touch, and vibration are: | |
| Jaundice is: | an abnormal yellow cast to the skin due to an accumulation of bilirubin in the blood. |
| The most dangerous type of skin cancer is: | melanoma. |
| The volume of sweat that is normally produced daily is about: | |
| To prevent a condition of hypothermia (lower than normal body temperature) in response to cold environmental conditions: | smooth muscles cells in the arterioles in the skin’s dermis contract, thereby diverting blood flow from the skin. |
| Visceral serosa refers to: | |
| The oily secretion called sebum is produced by: | sebaceous glands. |
| Bundles of smooth muscle cells that are attached to hair follicles and serve to pull the hair follicles and the hair they contain into an upright position are called: | arrector Pili |
| The site within the hair follicle where cells are actively dividing to form hair is called the: | the hair bulb. |