Unit 1
difference between tendons and ligaments
tendons - muscles to bones
ligaments - bones to bones
What are the wrist, palm and fingers called?
wrist - carpals palm - metacarpals
fingers - phalanges
Is the smooth muscle voluntary or involuntary?
involuntary (digestive)
what are axons?
single long fibers, conducts information away from the cell
what is the cytoplasm?
The area between the nucleus and the membrane
What are osteocytes?
mature bone cells, enclosed in tiny chambers called LACUNAE
What's a sarcolemma?
muscle fiber membrane
Somatic Nervous System
It is skeletal and voluntary
Difference between exocytosis and endocytosis?
Exocytosis - things exit the cell
Endocytosis - things enter the cell
what is the upper leg, knee cap and lower leg called?
upper leg - femur
Knee cap - patella
lower leg - tibia and fibula
Types of muscle
Skeletal – striated, voluntary
Smooth – involuntary (digestive)
Cardiac - heart
What do oligodendrocyte make?
make myelin sheath that provides insulation around the axons
Where is the elastic cartilage located?
external ear and larynx
Diarthoric joints
Ball and Socket (shoulder/hip) Hinge (elbow, knee)
Pivot (lower arm) Saddle (thumb)
What's a neuromuscular junction?
where a nerve and muscle fiber come together
Autonomic Nervous System (2 branches)
Parasympathetic (rest and digest)
Sympathetic (fight or flight)
Epithelial tissue descriptions depending on the layers
simple = single layer /stratified = multiple layers/squamous = flat /cuboidal = square
columnar = column (rectangle)
Vertebral Column
Cervical (C1-C7) Thoracic (T1-T12) Lumbar (L1-L5)
Sacrum and Coccyx (tailbone )
What's the sliding filament theory?
The contraction of a muscle occurs as the thin filament slide past the thick filaments.
function of the nervous system?
coordinate the body’s systems by receiving and sending information; maintaining homeostasis