Joint Calssification
The functional classification for a freely movable joint.
Diarthrosis
This movement decreases the angle between two bones.
Flexion
This muscle type is striated, involuntary, and branched.
Cardiac muscle (Review: What are muscle cells called?)
This neurotransmitter is released at the neuromuscular junction.
Acetylcholine (ACh) (Review: What cell releaces ACH and what cell recieves the signal? What is this junction called?)
This is the most abundant cell of the epidermis, and it produces a tough fibrous protein.
Keratinocyte
Ch 9
This joint is the MOST easily dislocated joint in the body.
Temporomandibular joint (TMJ)
This fibrous joint is found only between skull bones and has wavy, interlocking edges.
Suture
The joint between the atlas and axis and the proximal radioulnar joint are both this type of synovial joint.
Pivot Joint
This connective tissue wraps a fascicle, which is a bundle of muscle fibers.
Perimysium. (Review: What connective tissue is an extension of the tendon?)
A single motor neuron plus all the muscle fibers it innervates.
Motor unit
This clear epidermal layer is found only in thick skin.
Stratum Lucidum (Review: Where is thick skin located?)
Double Jeopardy!! (Only lose half the points if you get this wrong)
Name all three classes of Levers and their components in order!
First Class (EFR)
Second Class (FRE)
Third Class (FER)
The periodontal ligament holds a tooth in its socket in this type of fibrous joint.
Gomphoses
Rotating the forearm medially so the palm faces posteriorly.
Pronation
This is the fundamental unit of contraction, found in repeating segments along a myofibril.
Sarcomere
This ion floods out of the sarcoplasmic reticulum and binds to troponin.
Calcium ion (Ca2+) (Review: What are the "flood gates" that release Ca2+ called? What transduces a signal to these gates?)
Healthcare professionals are trained to keep an eye out for skin cancers using this abbreviation. (Give what they mean)
Asymmetry
Boarders
Color
Diameter
Evolution
Which one doesn't belong, and WHY? Stratum basale, stratum spinosum, papillary layer, stratum corneum.
Papillary layer. It's part of the dermis. The other three are layers of the epidermis.
Intervertebral discs and the pubic symphysis are this type of cartilaginous joint.
Symphysis (amphiarthrosis, united mainly by fibrocartilage)
What saddle joint makes opposition possible? (Be as specific as possible. Hint: Use lab terms)
First (thumb) carpometacarpal joint.
One T tubule plus the two terminal cisternae on either side of it.
Triad
In a relaxed muscle, this protein blocks the myosin-binding sites on actin.
Tropomyosin (Review: What is tropomyosin's best friend? What binds to the best friend to move tropomyosin? What can occur once tropomyosin is moved out of the way?)
This dermal layer makes up about 80% of the dermis, is made of dense irregular CT, and forms lines of cleavage.
Reticular layer
TRUE or FALSE: Elasticity is a muscle's ability to stretch.
FALSE. Elasticity is the ability to recoil after being stretched. The ability to stretch is extensibility
Give BOTH the structural and the functional classification of the epiphyseal plate.
cartilaginous joint (a synchondrosis united by hyaline cartilage) and synarthrosis (immovable)
This is the MOST important factor in joint stability. (Hint: Not articular surfaces, and ligaments can stretch)
Muscle tone (keeps tension on tendons!)
Put these in order from LARGEST to SMALLEST: fibril, filament, fascicle, fiber.
fascicle --> fiber --> fibril --> filament
Name the THREE things that must happen for a muscle to relax.
(1) ACh is broken down by acetylcholinesterase (AChE), (2) the nerve impulse stops, and (3) Ca²⁺ is actively pumped back into the SR?
The hypodermis is NOT technically part of the skin. Name the two layers that ARE, and the tissue type of each.
Epidermis (keratinized stratified squamous epithelium) and the dermis (fibrous connective tissue)
The shoulder is the most freely movable joint but lacks stability. Name the fibrocartilage rim that deepens its socket AND the four rotator cuff muscles.
Glenoid labrum, plus the subscapularis, supraspinatus, infraspinatus, and teres minor