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IPHY 3410- exam 2
| Question | Answer |
|---|---|
| cardiac and smooth muscle cells are surrounded by what | endomysium |
| what is at intercalated disk | gap junction and desmosome |
| circular vs. longitudinal layer | circular closer to lumen; they're perpendicular to one another |
| 3 types of joints | fibrous, cartilagenous, synovial |
| immobile joint | synarthrosis |
| slightly moveable joint | amphiarthrotic |
| freely moveable | diarthrotic |
| 3 types of fibrous joints | suture, syndesmoses, gomphoses |
| fibrous joints are made of | dense regular connective tissue |
| syndesmoses | amphiarthrotic, connect bones together |
| two types of cartilagenous joints | symphysis and synchrondrosis |
| synchrondrosis | bones united by hyaline cartilage |
| epiphyseal plate is an example of | a synchondrosis (cartilagenous joint) |
| what type of connective tissue comprises the strongest portion of an articular capsule | dense irregular CT |
| synovial fluid | blood filtrate containing glycoproteins; nourishes chondrocytes |
| what secretes synovial fluid | fibroblast |
| the articular disc is what in the knee | meniscus |
| rheumatoid arthritis | autoimmune disorder that causes inflammation of synovial membrane |
| what is the inflamed joint synovium in rheumatoid arthritis called | pannus |
| pannus in rheumatoid arthritis can turn into what | scar tissue and thus fusing of bones |
| osteoarthritis | articular cartilage breaksn down via normal enzyme activity or overuse; bone-to-bone contact results |
| gouty arthritis | uric acid build up in synovial joints and forms a tophus |
| translational joints | can move in multiple directions but only within one plane |
| uniaxial joints: | can only move around 1 axis |
| biaxial joints | moves around 2 axes |
| multiaxial joints | 3+ axes |
| hinge joint | humerus and ulna (uniaxial) |
| pivot joint | humerus and radius (uniaxial) |
| plane joint | carpals/tarsals (translational) |
| condyloid joint | knuckle joint (biaxial) |
| saddle joint | 1st metacarpal-carpal joint (biaxial) |
| ball and socket joint | shoulder (multiaxial) |
| 6 joint movement types | hinge, pivot, plane, condyloid, saddle, ball&socket |
| bursa | closed fibrous sac lined by synovial membrane/filled with synovial fluid |
| tendon sheath | an elongated bursa that wraps around tendons in high friction areas |
| carpal tunnel syndrome | inflammation of tendon sheaths, puts pressure on nerve passing through carpal tunnel |
| how many bones in knee joint | 3 (femur, patella, tibia) |
| 2 "joints" in knee | tibiofemoral and femoropatellar |
| what type of joint is the femoropatellar joint | plane |
| bicondylar hinge joint | articulations between both the lateral and medial condyles |
| what type of joint is tibiofemoral | biaxial hinge joint |
| what do collateral ligaments do | stop leg extension |
| what do cruciate ligaments do | allow knee to lock |
| ACL does what | prevents anterior sliding of tibia |
| PCL | prevents anterior sliding of femur |
| function of menisus | enlarge contact between femur and tibia, guide/support condyles, increase weight bearing surface area |
| what 2 parts of knee are frequently torn together | medial meniscus and MCL (tibial collateral ligament), (and ACL) |
| strain vs sprain | sprain is ligament, strain is tendon/muscle |
| 3 parts of mucosa | epithelium, lamina propria (w/ mucosa associated lymphoid tissue), muscularis mucosa |
| 3 things in submucosa | vascularized, glands, nerves |
| muscularis externa | nerve plexus, 2 layers (circular and longitudinal) |
| what type of tissues found in serosa | simple squamous epithelium w/ a thin layer of loose aerolar CT |
| the esophagus is not... | contained within a cavity lined by a serous membrane |
| what forms outer layer of esophagus? | adventita |
| 2 nerve plexuses | myenteric and submucosal |
| what does myenteric nerve plexus control | peristalsis and segmentation |
| what does submucosal nerve plexus control | gland secretions and muscularis mucosa contrations |
| tongue is covered in what type of epithelium | keratinized stratified squamous epithelium |
| what is the line under the tongue called? | lingual frenulum |
| 4 functions of saliva | cleanses teeth, dissolves food (taste), digestive enzymes, contains mucous |
| 2 cell types in salivary glands | serous cells and mucous cells |
| parotid gland | salivary gland- serous cells (largest salivary gland) |
| submandibular gland | both serous and mucous cells |
| sublingual gland and duct | mucous cells |
| different shapes of teeth for different jobs | heterodont dentition |
| baby teeth name/how many | deciduous teeth (20) |
| # of roots and cusps premolars | 2+ cusps, 1 or 2 roots |
| # of roots and cusps molars | 4-5 cusps, 2-3 roots |
| pulp is made of | loose areolar CT (blood vessels and nerves) |
| dentin- comprised of what and what cells produce it | created by odontoblasts (collagen+minerals- bone like), |
| enamel- made of what and what cell produces it? | 99% calcium (layer added during development by ameloblasts) |
| cementum | calcified connective tissue (replaced by cementoblasts) |
| periodontal ligaments- what type of tissue? | dense CT that attaches cementum to bony socket |
| hypoplastic dentition | kids w/ celiac disease (issues with enamel, only occurs in kids because enamel isn't produced in adults) |
| where is muscularis externa skeletal muscle | pharynx for swallowing, top of esophagus |
| muscularis externa in esophagus | upper third: skeletal, middle third: mix, lower third: smooth |
| type of epithelium in stomach | simple columnar epithelium |
| what is found at boundary between gastric pits and gastric gland | undifferentiated stem cells |
| stomach cells replaced every ___ days | 3-7 |
| Alexis St Martin | gastric fistula from bullet wound |
| sphincter between pancreatic/bile ducts and duodenum | hepatopancreatic sphincter |
| ingested fats stimulate | CCK production, release of bile |
| presence of acid stimulates | secretin production, release of pancreatic juice |
| what transports fats out of small intestine | lacteal |
| goblet cells | (small intestine/colon) secrete mucus to protect epithelium- more in colon than si |
| paneth cells | (small intestine) destroy bacteria |
| Peyer's patch | mucosa-associated lymphoid tissue found in small intestine |
| epithelium type found in colon | simple columnar |
| internal anal sphincter | smooth muscle |
| external anal sphincter | skeletal muscle |
| what are the veins in the anal canal called | hemorrhoidal |
| gallbladder | stores and concentrates bile |
| what's in bile? | cholesterol, bile acids, salts, bilirubin |
| gallstones | formed of cholesterol, precipitates out of bile when stored in gallbladder |
| what hormone controls release of bile into duodenum? | CCK |
| what are pancreatic exocrine cells called? | acinar |
| what controls release of pancreatic juices? | secretin |
| what produces intrinsic factor | parietal cells |
| what produces HCl | parietal cells |
| 4 functions of respiratory system | remove CO2/bring in O2, sound, smell, protection |
| conducting zone | nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles |
| functions of conducting zone | transport air in/out, filter, warm/humidify |
| respiratory zone | respiratory bronchioles, alveolar duct, alveolar sac, alveoli |
| mucous membrane definition | epithelium+lamina propria |
| what divisions of the pharynx must handle food? | oropharynx and laryngopharynx |
| type of epithelium in nasopharynx | pseudostratified ciliated columnar |
| type of epithelium in oropharynx | stratified squamous |
| type of epithelium in laryngopharynx | stratified squamous |
| what kind of cartilage makes up the epigottis | elastic |
| where does pseudostratified ciliated columnar epithelium return in the larynx? | below the vocal folds |
| castrati | males castrated before puberty; high voice and long legs |
| function of carina | initiates cough reflex |
| branching of bronchiole tree | main (primary), lobar (secondary), segmental (tertiary) |
| how many lobes and lobar bronchi in right lung? | 3, 3 |
| how many lobes and lobar bronchi in left lung? | 2, 2 |
| how many total segments left lung | 8-10 |
| how many total segments right lung | 10 |
| If a joint can move, does it necessarily have an axis of rotation? | No, a joint can slide without rotating |
| What articular surface feature is common to ALL JOINTS THAT HAVE AN AXIS OF ROTATION but is not seen in joints that move in a plane | curved surfaces |
| Can a synovial joint that has no axis of rotation be diarthrotic | yes, because it moves in a plane and diarthrotic joints are freely moving. |
| What types of joints would be affected by a virus that specifically damages cartilage in the body? | cartilagenous and synovial |
| As you travel through the alimentary canal from the mouth to the small intestine, how does the type of epithelium change | It changes from stratified squamous to simple columnar |
| How is the mucosa layer of the large intestine similar to that of the small intestine | Both have absorptive cells that absorb water. Both have goblet cells for lubrication and protection. Both contain Mucosa Associated Lymphoid Tissue (MALT) |
| Which cell types of the stomach, small intestine, and large intestine normally produce mucus | goblet cells (SI/colon), mucous cells in stomach, mucous neck cells in stomach |
| Contraction of which skeletal muscle(s) allow for inhalation of air into the lungs? | external intercostals and diaphragm |
| In the respiratory system, what type of epithelium is most common in the respiratory zone | Simple squamous to allow gas exchange |
| premature babies w/out surfactant | more energy to inflate alveoli |
| What structure(s) make up the respiratory membrane? | basement membrane, simple squamous of capillary, simple squamous of alveoli |
| What are the shapes of Type I and Type II cells and how does the shape related to the function? | Type I cells are squamous because they are involved in gas exchange and Type II cells are cuboidal because they are secretory. |
| what is the term to describe stretching a tendon? | strain |
| synchondrosis | synarthrotic joint w/ hyaline cartilage joining bones |
| where is bile SECRETED | duodenum |
| which layers of alimentary canal have nerve plexus | muscularis externa and submucosa |
| what SI structure secretes alkaline mucus | duodenal glands |
| how many premolars | 8 (4 pairs) |
| vocal folds are stretched between what 2 cartilages | thyroid and arytenoid |
| elastic connective tissue encasing alveolar sacs is called what | stroma |
| space between vocal folds | rima glottidis |