ANATOMY 35 LAB UNIT 1 STUDY GUIDE CLAVICLE Right or left? 1. sternal end –flat end 2. acromial end –rounded end 3. conoid tubercle (“cone shaped”) –near round end 4. Acromioclavicular joint SCAPULA Right or left? 1. Superior border (superior margin) 2. Medial border (vertebral margin) 3. Lateral border (axillary margin) 4. Glenoid cavity (glenoid fossa) 5. supraglenoid tubercles 6 Scapular spine 7. Acromion process 8. Coracoid process (“hook shaped”) 9. Scapular notch (suprascapular notch) 10. supraspinous fossa 11. infraspinous fossa 12- subscapular fossa HUMERUS. Right or left? 1. Head 2. Greater tubercle 3. Lesser tubercle 4. Intertubercular groove (bicipital groove) 5. Anatomical neck 6. Surgical neck 7. Deltoid tuberosity 8. Medial epicondyle 9. Lateral epicondyle (skip) 10. Capitulum 11. Trochlea 12. Coronoid fossa 13. Radial fossa 14. Olecranon fossa How to tell R from L Clavicle: Point the flat sternal end toward the midline. The clavicle should bulge OUT then IN, and the conoid tubercle must point DOWN. Study Tip: Don’t get the conoid (“cone shaped”) tubercle of the clavicle mixed up with the coracoid (“hook shaped”) process of the scapula or the coronoid (“crow’s beak shaped”) process of the ulna and of the mandible! Scapula has a “c” and so does coraCoid. Ulna and Mandible have an “n” and so does coroNoid. How to tell R and L Scapula: Hold the scapula by the spine and place the subscapular fossa behind you on top of your own shoulder blade (smooth side against your skin). The glenoid cavity should face laterally, not towards the vertebral column. How to tell R and L Humerus: Hold the humerus on the anterior surface of your arm with the olecranon fossa touching your skin (facing posteriorly). What direction is the head facing? It should be should face medially towards the body. ULNA. Right or left? 1. Olecranon process 2. Coronoid process (“crow’s beak”) 3. Semilunar notch (trochlear notch) 4. Radial notch (or groove) 5. Styloid process 6. Head 7. Ulnar tuberosity RADIUS Right or left? 1. Head 2. Neck 3. Radial tuberosity 4. Styloid process 5. Ulnar notch 6. Proximal and distal radioulnar joints How to tell R and L Ulna: Bend your elbow 90 degrees, then place the ulna on your forearm with the semilunar notch facing the ceiling. The radial notch should be on the thumb side, not the pinky side because the radius is on the thumb side. How to tell R and L Radius Place the radius on your forearm with the styloid process on the thumb side, facing laterally. The distal shaft should scoop upwards towards the ceiling, not touching your skin. 1 CARPALS 1. TRAPEZIUM (by the thumb) 2. TRAPEZOID (right beside thumb) 3. CAPITATE (base of 3rd met) 4. HAMATE (base of 4-5th mets) 5. TRIANGULAR or triquetrum (lateral-most) 6. PISIFORM (on palmar side, under triangular) 7. LUNATE (the one next to scaphoid) 8. SCAPHOID (the largest; near the thumb) Mnemonic for carpals: “Physical Therapy Lots of Studying, Time To Come Home”. Physical: pisiform Therapy: triangular Lots: lunate Studying: scaphoid Time: trapezium To: trapezoid Come: capitates Home: hamate METACARPALS; They are numbered metacarpal 1-5 (write “2nd metacarpal, 4th metacarpal”, etc) PHALANGES (plural) PHALANX (SINGULAR): Proximal, intermediate, distal, (write “1st distal phalanx, 2nd intermediate phalanx”, etc). NOTE: The thumb is called the pollex and does not have the intermediate phalanx. The hand is called the manus JOINTS: Metacarpal Phalangeal Joint (MPJ) Proximal Interphalangeal Joint (PIPJ) Intermediate Phalangeal Joint (IPJ) Distal Interphalangeal Joint (DIPJ) LOWER EXTREMITY OS COXA (or Pelvic bone or Innominate bone): Right or left? It looks like one bone but it is the fusion of 3 bones during childhood (ileum, ischium, and pubis): 1. Acetabulum 2. Obturator foramen 3. Pelvic brim ILIUM 1. Iliac crest 2. Iliac fossa 3. Anterior superior iliac spine (“As Is”) 4. Anterior inferior iliac spine 5. Posterior superior iliac spine 6. Posterior inferior iliac spine 7. Greater sciatic notch 8. Arcuate line 9. Sacroiliac joint 10. Auricular surface How to tell the difference between a male and female pevis: The female pelvis (R) has a wide pubic arch; the pubic arch of a male pelvis (L) is shaped like a “V”. ISCHIUM 1. Ischial spine 2. Ischial tuberosity 3. Lesser sciatic notch PUBIS (or Os Pubis or Pubic bone) 1. 2. 3. 4. Superior ramus Inferior ramus Pubic symphysis Symphyseal surface 5. Pubic arch How to tell R from L Os Coxa: Place the auricular surface against the clothing on your hip, with the pubis facing anteriorly. The acetabulum should point laterally. 2 FEMUR (right or left?) 1. Head 2. Neck 3. Greater trochanter 4. Lesser trochanter 5. Intertrochanteric line 6. Intertrochanteric crest 7. Lateral condyle 8. Medial condyle 9. Intercondylar notch 10. Lateral epicondyle (skip) 11. Medial epicondyle 12. Linea aspera 13. Gluteal tuberosity 14. Popliteal fossa TIBIA (right or left?) 1. Medial malleolus 2. Medial condyle 3. Lateral condyle 4. Intercondylar eminence 5. Tibial tuberosity 6. Fibular notch FIBULA (right or left?) 1. Head 2. Lateral malleolus How to tell R and L Femur: Place the femur on the anterior surface of your thigh, with the linea aspera touching your skin (facing posteriorly). What direction is the head facing? It should be should face medially towards the body. How to tell R and L Tibia: Place the tibia on the anterior surface of your leg with the tibial tuberosity facing anteriorly (not touching your leg). What side is the medial malleolus on? It should be medial, towards the midline of the body. How to tell head from malleolus on fibula: The head is flatter on top and the malleolus is pointy at the tip, and the malleolus has its smooth facet more on the side of the bone, instead of on the top. How to tell R from L fibula: Place the smooth facet of the lateral malleolus on a paper and trace just the malleolus. Notice one side is rounded (anterior) and one side is straight (posterior). Now place the smooth facet against your sock at your lateral ankle. The rounded anterior edge should face forward, not backward. 1. The anterior edge of the lateral malleolus is curved. 2. The posterior edge is straight(er) FOOT: TARSALS: 1. TALUS JOINTS: Metatarsal Phalangeal Joint (MPJ) a. Facet for medial malleolus Proximal Interphalangeal Joint (PIPJ) b. Facet for lateral malleolus Intermediate Phalangeal Joint (IPJ) 2. CALCANEUS Distal Interphalangeal Joint (DIPJ) a. Calcaneal tuberosity 3. NAVICULAR 4. CUBOID 5. CUNEIFORMS (MEDIAL, INTERMEDIATE, LATERAL) METATARSALS (1-5). The 5th metatarsal has a STYLOID PROCESS PHALANGES (proximal, intermediate, distal). The big toe is called the hallux and does not have the intermediate phalanx. PATELLA (right or left?) 1. Apex 2. Base 3. Medial articular facet 4. Lateral articular facet 5. Medial and lateral border How to tell medial from lateral facet on patella: Place the patella on the table, facets facing down. The bone will always fall on the side of the lateral facet, with the medial facet not touching the table. Now you can tell which side is the lateral border, and which is a right or left patella. 3 SKULL Cranium (the whole skull except for mandible) Calvarium (lid of the cranium) Anterior, Middle, and Posterior cranial fossa Frontal bone 1. Coronal suture 2. Supraorbital foramen (supraorbital notch) 3. Superior orbital fissure 4. Inferior orbital fissure (actually, this is part of the sphenoid bone) 5. Glabella 6. Frontonasal suture 7. Frontal sinuses 8. Superciliary arch Parietal bones 1. Sagittal suture 2. Squamous suture (squamosal suture) Occipital bone 1. Lambdoidal suture 2. Foramen magnum 3. Occipital condyles 4. Hypoglossal canal 5. Inferior nuchal line 6. Superior nuchal line Temporal bones 1. External auditory meatus (eternal acoustic meatus) 2. Mandibular fossa 3. Tempomandibular joint (TMJ) 4. Zygomatic process (don’t write “zygomatic” since that is another bone) 5. Styloid process 6. Mastoid process 7. Stylomastoid foramen 8. Squamous portion 9. Petrous portion (contains the ear ossicles/bones) 10. Jugular foramen 11. Internal auditory meatus (internal acoustic meatus) Sphenoid bone (know it in the skull and also disarticulated) 1. Sella turcica (where the pituitary gland sits) 2. Lesser wings 3. Anterior clinoid process 4. Greater wings 5. Optic foramen (for optic nerve) 6. Pterygoid processes (“wing-like”): Right medial and lateral , left medial and lateral. 7. Foramen ovale 8. Foramen spinosum 9. Foramen rotundum ) 10. Carotid canal 11. Foramen lacerum 4 Ethmoid bone (know it in the skull and also disarticulated. Seen in one place in the skull; don’t confuse with vomer) 1. Crista galli 2. Cribiform plate (area with holes in it for olfactory nerves) 3. Olfactory foramina (the holes in the cribiform plate) 4. Ethmoid sinuses 5. Perpendicular plate 6. Middle nasal conchae Optic foramen Foramen lacerum Foramen rotundum Foramen ovale Foramen spinosum Internal auditory meatus Carotid canal Foramen magnum Mandible 1. Ramus 2. angle 3. Body 4. Condylar process (mandibular condyle) 5. Mandibular notch 6. Coronoid process 7. Alveolar process 8. Mandibular foramen 9. Mental foramen Jugular Foramen Other skull bones: 1. Zygomatic bones 2. Nasal bones 3. Lacrimal bones Lacrimal canal 4. Vomer bone (seen in two places; don’t confuse with ethmoid bone) 5. Inferior nasal conchae FETAL SKULL 1. Anterior fontanel 2. Posterior fontanel 3. Mastoid fontanel 4. Sphenoid fontanel 5. Occipital bone 6. Frontal bone 7. Parietal bone 8. Temporal bone 9. Sagittal suture 10. Metopic (frontal) suture 5 Maxilla 1. Alveolar processes 2. Maxillary sinuses 3. Zygomatic process 4. Infraorbital foramen (for trigeminal nerve) 5. Incisive foramen 6. Frontal process of the maxilla 7. Hard palate 8. Palatine suture Palatine bones 1. Horizontal plate NOTE: Do not use the terms hammer, anvil, and stirrup on the exam! EAR BONES 1. Malleus (mallet shaped) 2. Incus (anvil shaped) 3. Stapes (stirrup shaped) Frontal bone Ethmoid bone Sphenoid bone Zygomatic bone BONES OF THE ORBIT Superior orbit: Frontal bone Inferior orbit: Maxilla Lateral orbit: Zygomatic bone Medial orbit: Ethmoid Posterior orbit: Sphenoid Maxilla The zygomatic arch (cheek area) consists of three bones: 1) Zygomatic bone 2) Zygomatic process of the temporal bone 3) Zygomatic process of the maxilla 6 ATLAS (Don’t just call it C-1) 1. Transverse process 2. Transverse foramen 3. Anterior tubercle 4. Posterior tubercle 5. Superior articular process or facet 6. Inferior articular process or facet 7. Vertebral foramen AXIS (Don’t just call it C-2) 1. Dens or odontoid process 2. 3. 4. 5. 6. 7. Superior articular process or facet Inferior articular process or facet Transverse process Transverse foramen Spinous process Vertebral foramen NOTE: The superior and inferior articular processes of all the vertebrae are the parts of the bone that project outward. There is a smooth facet on each that is covered in cartilage in real life. The smooth part is the articular facet, which is on the process. I will accept either “process” or “facet” since it is difficult to tell which one is labeled with the sticker. CERVICAL VERTEBRAE- 7 of them 1. Spinous process 2. Transverse process 3. Transverse foramen 4. Lamina 5. Pedicle 6. Body 7. Vertebral foramen 8. Superior articular process 9. Inferior articular process THORACIC VERTEBRAE – 12 of them 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Inferior costal facet for head of rib Superior costal facet for head of rib Costal facet for tubercle of rib Inferior articular process Superior articular process Transverse process Spinous process Pedicle Lamina Body Vertebral foramen LUMBAR VERTEBRAE – 5 of them 1. Spinous process 2. Transverse process 3. Lamina 4. Pedicle 5. Body 6. Vertebral foramen 7. Inferior articular process 8. Superior articular process 7 SACRUM 1. 2. 3. 4. 5. 6. 7. 8. 9. Apex (the apex of the sacrum touches the base of the coccyx) Sacral promontory (upper lip of sacrum on internal side) Sacral foramina Median sacral crest Lateral sacral crest Transverse lines Ala Superior articular process Sacral canal COCCYX 1. Apex KNOW THE FOLLOWING ON A VERTEBRAL COLUMN: 1. Intervertebral foramina 2. Intervertebral disc STERNUM MANUBRIUM Jugular notch Clavicular notches Costal notches BODY Costal notches XIPHOID PROCESS RIBS: (Twelve pairs of ribs altogether) Identify 1st Rib and 12th rib Know the following on a full skeleton only 7 TRUE RIBS 5 FALSE RIBS (2 of these ribs are the floating ribs) 2 FLOATING RIBS How to tell true from false rib: A true rib inserts directly into the sternum (by way of its costal cartilage). A false rib’s costal cartilage inserts into the costal cartilage of the rib above it. Two of the false ribs are floating ribs that have no costal cartilages and do not insert into the sternum at all. How to tell R from L rib: Place rib on table with groove facing down, then the head should stick up in the air. The head of the rib is posterior and the rib should curve laterally. http://www.youtube.com/watch?v=ugirFd 7a-mM COSTAL CARTILAGES Know the following on a single rib: R or L? 1. Head a) superior demifacet b) inferior demifacet 2. Neck 3. Costal tubercle 4. Costal angle (where rib first bends) 5. Costal groove (depression in shaft) HYOID BONE 1. Body 2. Greater horn 3. Lesser horn 8 HISTOLOGY = “tissues” EPITHELIUM: Simple squamous Found in lungs (deep region), kidney glomerulus, and blood vessels Simple cuboidal Found in kidney tubules, hepatocytes (liver), and thyroid follicles Simple columnar Found in stomach and intestines (areas that secrete substances) Identify goblet cell (secretes mucous) Pseudostratified columnar Found in trachea and bronchi (not the deep area of lungs) Identify goblet cell (secretes mucous) and cilia Stratified squamous Non-keratinized: Found in oral cavity, esophagus, anus, vagina (moist skin areas) Keratinized: Found in dry skin areas (epidermis) Identify stratum corneum, stratum granulosum, stratum lucidum, stratum spinosum, stratum basale, dermal papilla, and interpapillary peg Stratified cuboidal Found in sweat glands Transitional Found in urinary bladder and ureter CONNECTIVE TISSUE PROPER (FIBROUS CONNECTIVE TISSUE) Adipose (fat) Identify adipocyte, nucleus, lipid droplet Reticular Found in lymph node and spleen Identify reticular fibers Areolar (Loose) Found in upper dermis and visceral (organ) serous (watery secretion) membranes Identify fibroblasts (dark nuclei), collagen fivers (wide, pale), elastic fibers (dark, thin) Dense regular Found in tendons and ligaments Identify collagen bundles, fibroblast nuclei Dense irregular (substitute this in place of dense elastic) Found in joint capsules 9 SPECIAL CONNECTIVE TISSUE Cartilage Types: Hyaline Found in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates Identify chondrocytes, lacunae Elastic Found in outer ear and epiglottis Identify chondrocytes, lacunae, elastic fibers Fibrocartilage Found in vertebral discs, meniscus of knee joint, pubic symphysis Identify chondrocytes Bone Compact bone Found in diaphysis (shaft) of long bones Identify osteon, central canal, lamellae, canaliculi, osteocytes Cancellous (spongy) bone Found in epiphysis (ends) of long bones Identify trabeculae and bone marrow Blood Identify red blood cell, white blood cell, platelet (thrombocyte) 10