Protein fibers of the bone matrix are composed of
Collagen
Calcium salt part of an inorganic material
Hydroxyapetite
1) These are stem cells that when divide, produces another stem cell and "committed cell," which matures to become an osteoblasts.
2) also called "Phagocytic cells" that do bone resorption- responsible for remodeling, dissolves the mineral parts (calcium and phosphate) of the bone matrix.
3) These produces bone matrix
1)Osteoprogenitor Cells are stem cells that when divide, produces another stem cell and "committed cell," which matures to become an osteoblasts.
2)Osteoclasts also called "Phagocytic cells" that do bone resorption- responsible for remodeling, dissolves the mineral parts (calcium and phosphate) of the bone matrix.
3) Osteoblasts produces bone matrix
What kind of fracture?
1)- diagonal fracture at an angle between linear and transverse
2)- fracture of the distal end of radius; complete transverse fracture of the distal radius
3)- partial fracture
4)- fracture spirals around axis of long bone; results from twisting stress
1)oblique- diagonal fracture at an angle between linear and transverse
2)colles- fracture of the distal end of radius; complete transverse fracture of the distal radius
3)greenstick- partial fracture
4) spiral- fracture spirals around axis of long bone; results from twisting stress
T/F: The body of your sternum often has a sternal foramen
False! Only 20% of the population has sternal Foramen
Pelvic Brim is composed of?
Pubic Symphesis
Arcuate Lines
Sacral Promontory
What are the Spinal Curvatures and which one do we develop later in life?
2 primary curves: thoracic and sacral (pelvic) (fetal position)
2 secondary curves: cervical and lumbar (developed after primary curves)
Abnormal Spinal Curvatures
1) abnormal lateral curvature that develops in adolescence; most common
2) "hunch-back", osteoporosis, weight lifting during adolescence, etc.
3) "sway-back" caused by pregnancy and obesity, added abdominal weight
T • scoliosis- abnormal lateral curvature that develops in adolescence; most common
T • kyphosis (hunch-back)- osteoporosis, weight lifting during adolescence, etc.
L • lordosis (sway-back)- pregnancy and obesity, added abdominal weight
What goes through these foramens?
1) Intervertebral Foramen
2) Vertebral Canal
3) Transverse Foramen
1) Intervertebral Foramen- Spinal Nerves that eventually combined with Spinal cord
2) Vertebral Canal- Spinal Cord
3) Transverse Foramen- passageway for arteries and vein for the brain.
All members must show me how hyperextension of the glenohumeral joint looks like
Radiocarpal and metacarpophalangeal are examples of what kind of Synovial Joint?
Condylar or Condyloid wrist
ankle movement (WITH ACTIONS!!)
1) raises toe (toe higher than heel)
2) lowers toe (toe lower than heel)
3) turn soles medially
4) turn soles away
1. dorsiflexion- raises toes (toe higher than heel)
2. plantar flexion- lowers toes (heel higher than toe) "point your toes"
3. inversion- turns soles medially
4. eversion- turns soles away from each other
Split legs action? which joint?
abduction of the hips
Three kinds of Joints and types of each joint
Fibrous joints (Gomphoses, Sutures, Syndesmoses Interosseous Membrane)
Cartilaginous Joint (Synchondroses, Symphesis)
Synovial joint (Plane, Hinge, Pivot, Condylar, Saddle, Ball and Socket)
T/F: Our muscles receive 40% of blood during maximal exercise
False! our muscles receieve up to 75-80% during maximal exercise
2 facial muscles that elevate your Mandible (closes mouth) and 2 muscles that open the mouth
Elevates Mandible (closes mouth): temporalis and masseter
Opens the mouth: Digastric and mylohyoid
which is which?
(A band, I band, M-line, H zone, Z-disc)
1) composed of actin
2) found in the middle of the sarcomere
3) composed of overlapping mysion and actin
4) disapperas during contraction
5) division of sarcomere (this to that)
1) I-band- composed of actin
2) M-Line- found in the middle of the sarcomere
3) A-Band- composed of overlapping mysion and actin
4) H-zone- disapperas during contraction
5) Z-disc- division of sarcomere (this to that)
1) Connective tissue that wraps around muscle fascicles
2) CT around each muscle fibers
3) CT on the surface of a skeletal muscle
Perimysium- Connective tissue that wraps around muscle fascicles
Endomysium- CT around each muscle fibers
Epimysium- CT on the surface of a skeletal muscle
Discuss all 13 steps of muscle contraction
