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Anatomy Exam #3
Blood vessels, Digestive, Respiratory, Urinary, Reproductive
113
Anatomy
Undergraduate 1
04/06/2026

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Term
Capillaries
Definition
Exchange oxygen with tissue
Term
Tunica Externa
Definition
Outer collagen layer of artery
Term
Tunica Media
Definition
Thick layer of smooth muscle
Term
Tunica Intima
Definition
Smooth inner surface, allows for oxygen exchange
Term
Elastic Arteries
Definition
Largest, elastic, close to heart
Term
Muscular Arteries
Definition
Medium, maintain blood pressure
Term
Arteriole
Definition
Smallest size, slows down blood before capillaries
Term
Fenestrations
Definition
Allow for passage of large molecules and nutrients
Term
Intercellular gaps
Definition
Passage of WBCs
Term
Veins
Definition
Thinner walls, larger lumen, valves
Term
Veins get ______ the farther away from the heart
Definition
Smaller
Term
Skeletal muscles and the heart
Definition
Skeletal muscles help to pump blood against gravity
Term
Chronic Venous Insufficiency
Definition
Broken valves allow for a backflow of blood and pooling
Term
Celiac trunk
Definition
Supplies blood to liver, stomach, spleen, pancreas, and gallbladder
Term
Superior/inferior mesenteric arteries
Definition
Supplies blood to intestines
Term
Leg arteries
Definition
Femoral -> Popliteal -> Tibal -> Peroneal
Term
Aortic Arch 3 main branches
Definition
Brachiocephalic (Right subclavian and common carotid)
Left common carotid
Left subclavian
Term
Arm arteries
Definition
Subclavian -> Axillary -> Brachial -> Radial -> Palmar -> Digital
Term
Internal Carotid
Definition
Supplies blood to brain
Term
External Carotid
Definition
Supplies blood to the head and face
Term
Circle of Willis
Definition
Arterial loop that provides blood to the brain regardless of blockage
Term
Internal Jugular Vein
Definition
Returns blood from brain, temporal, and facial regions
Term
External Jugular Vein
Definition
Returns blood from posterior head
Term
Portal Vein
Definition
Vein that connects two capillary beds
Term
Hepatic Portal Vein
Definition
Takes nutrient-rich blood from the digestive tract straight to the liver
Portal vein -> Sinusoids -> Hepatocytes -> Central vein
Term
Smell in the superior nasal cavity
Definition
Odor molecules bind to olfactory epithelium and dissolve in the mucus and dendrites of CN1 sense molecules and send to olfactory cortex
Term
Eustachian Tube
Definition
Connects middle ear to throat
Equalizes pressure
Opens during yawning, chewing, swallowing
When it get clogged = Ear infection/cold
Term
Soft Palate and Uvula
Definition
Prevent food from getting into your nasal passage
Term
Fauces
Definition
Opening to the oropharynx from the oral cavity
Term
Palatine and lingual tonsils
Definition
Trap and destroy pathogens
Term
Laryngopharynx
Definition
Posterior to larynx
Stops where trachea and esophagus splits
Term
Larynx
Definition
Voice box that connects pharynx to trachea
Term
Epiglottis
Definition
Prevents food from going down the trachea
Term
Tracheal Cartilage
Definition
"C" shaped rings that give airway structure
Term
Primary Bronchi
Definition
Large branches of trachea leading to each lung
Term
Secondary Bronchi
Definition
Smaller branches leading to each lobe of the lung
Term
Respiratory zone
Definition
Where gas exchange occurs
Terminal Bronchiole -> Aveolar Duct -> Alveolar Sac -> Alveolus
Term
Right lung
Definition
Superior lobe
Middle lobe
Inferior lobe
Term
Left lung
Definition
Superior lobe
Inferior lobe
Cardiac notch
Term
Humans ___ need both lungs
Definition
DONT
Term
Pleura
Definition
Lung membrane that reduces friction
Term
Parietal Pleura (superficial)
Definition
Outer layer that lines the thoracic wall and diaphragm
Term
Visceral Pleura (deep)
Definition
Inner wall that lines the outer surface of lungs
Term
Pleural Cavity
Definition
Space between two layers
Term
Tension Pneumothorax
Definition
Collapsed lung when air gets into pleural space and lungs cannot expand
Term
Propulsion
Definition
Moving food down the GI tract
Term
Lumen
Definition
Technically outside the body
Term
Submucosa
Definition
Connective tissue that connects mucosa to a surrounding muscular layer
Houses blood vessels, nerves, lymphatic vessels, and glands
Term
Muscularis
Definition
Contractions for digestion
Term
Circular muscle (inner)
Definition
Propulsion and mechanical digestion
Term
Longitudinal muscle (outer)
Definition
Propulsion
Term
Peristalsis
Definition
Sequential contraction of digestive muscles to move food
Term
Serosa
Definition
Layer of connective tissue surrounding digestive organs to hold them in place (only in abdominal cavity)
Term
Peritoneum
Definition
Surrounds digestive organs, holds them in place, reduces friction during digestion
Term
Buccinator muscles
Definition
Cheek muscles
Term
Orbicularis oris
Definition
Lip muscles
Term
Hard and soft palate
Definition
Separates oral and nasal cavities, allows you to breath while chewing but not swallowing
Term
Esophagus
Definition
Runs from pharynx to stomach (10 in)
Term
Upper Esophageal Sphincter
Definition
Controls food entering esophagus and gas leaving esophagus
Term
Lower Esophageal Sphincter
Definition
Controls food entering stomach and prevents juices from leaving stomach
Term
Small Intestine
Definition
Main place of digestion
Term
Cardia
Definition
Where stomach meets esophagus
Term
Fundus
Definition
Superior dome of stomach
Term
Pyloric Canal
Definition
Connects stomach to small intestine
Term
Chief Cells
Definition
Releases enzyme to break down protein and fat
Term
Parietal Cells
Definition
Secrete HCL into stomach to break down food
Term
Enteroendocrine Cells
Definition
Release hormones for digestion (gastrin)
Term
GERD
Definition
Tums - Neutralize stomach acid
Pepcid - Stop parietal cells from releasing more HCL
Term
Duodenum
Definition
First part of small intestine (most water absorption)
Receives juices from pancreas and gall bladder (bile)
Term
Jujunum
Definition
Middle part of your SI
Term
Ileum
Definition
Last part of your SI
Term
LI
Definition
Cecum -> Ascending Colon -> Transverse Colon -> Descending Colon -> Sigmoid Colon -> Rectum (Voluntary) -> Anus (Voluntary) -> External Anal Sphincter
Term
Appendix
Definition
Small vestigial organ (when infected needs to be removed)
Term
Walls of LI
Definition
No circular folds or villi
Microvilli for absorption
Term
Goblet Cells
Definition
Secrete mucus that protects the intestine from GI bacteria
Term
Ostomy bags
Definition
When a stoma is medially made, it doesn't have voluntary control
Term
Liver
Definition
Produces bile and processes nutrients
Split into 2 lobes separated by the falciform ligament
Can regrow 25%
Term
Gall bladder
Definition
Stores bile until needed to process fats
Body -> Fundus -> Neck -> Cystic Duct -> Common Bile Duct
Term
Pancreas
Definition
Regulates blood glucose levels
Term
Sinusoids
Definition
Capillaries of the liver
Term
Hepatocytes
Definition
Nutrient/toxin processing
Term
Liver cirrhosis
Definition
Irreversible condition caused by alcoholism or hepatitis
Term
Jaundice
Definition
Skin and sclera turning yellow
Liver stops breaking down bilirubin (byproduct of old RBCs)
Term
Cell clusters
Definition
Create 1 liter of pancreatic juice per day
Juice breaks down sugars, fats, and proteins
Term
Salivary Glands
Definition
Parotid Glands
Sublingual Glands
Submandibular Glands
Term
Teeth
Definition
Incisors
Cuspid (canines)
Premolars
Molars
Term
Tooth
Definition
Crown: Above gum lines
Root: Portion of the tooth in the maxilla/mandible
Enamel: Hard-exterior surface
Dentin: Bone-like interior tissue
Term
Functions of Urinary System
Definition
Filter blood, regulate water concentration, regulate blood pressure
Term
Right kidney sits
Definition
inferior because liver is on top
Term
Capsule
Definition
Tough protective layer
Term
Renal Cortex
Definition
Meaty outer layer where filtration occurs
Term
Medulla
Definition
Inner region that collect urine
Term
Renal Hilum
Definition
Renal vein, renal artery, and renal pelvis
Term
Renal Column
Definition
Connective tissues that separate the renal pyramids and splits the kidneys into two
Term
Renal Pyramid
Definition
Cone-shaped structures that collects urine
Term
Renal Papilla
Definition
Collecting ducts that transport urine to the calyces
Term
Major/Minor Calyx
Definition
Collects urine from the papilla and funnels it towards the ureter
Term
Ruptured Kidney
Definition
Collision in lower back
Term
Renal Vasculature
Definition
20-25% of total cardiac output is moving through for filtration
Term
Glomerular capsule
Definition
Filters blood and remove water, small solutes, and glucose
Term
Nephron tubule
Definition
Capillaries will absorb water and glucose to maintain homeostasis
Term
Rhabdomyolysis
Definition
Broken down muscle tissues damage the renal tubules
Term
Ureter
Definition
Connects each kidney to the bladder
Term
Adventitia
Definition
Connective outer layer that holds the ureter in place in the posterior abdominal cavity
Term
Kidney stone
Definition
Form in the renal papilla
Caused by excessive concentration of solutes
Term
Female bladders
Definition
Sit anteriorly to the uterus
Term
Detrusor Muscle
Definition
Smooth muscle layer surrounding the bladder
Term
Ureteral Opening
Definition
Where the ureters enter the bladder to store urine
Term
Trigone
Definition
Triangular region formed by the ureteral openings and the start of the urethra
Term
Internal Urethral Sphincter
Definition
Involuntary control from the ANS
Smooth muscle
Term
External Urethral Sphincter
Definition
Voluntary control
Skeletal muscle
Term
Urinary Tract Infection
Definition
Bacteria travel up the urethra to the bladder
Term
Urinary Tract
Definition
Kidney -> Nephron -> Ureter -> Urinary Bladder -> Urethra
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