Tissues: Muscle and Nerve

Question 1

Muscle tissue overview

Answer 1

function is to contract to enable movements
muscle cells are called muscle fibers
cells contain myofilaments (contain actin and myosin)
skeletal, cardiac, and smooth

Question 2

skeletal muscle

Answer 2

long, cylindrical cells, multinucleate, striated (strips of myofilaments)
function: voluntary movement, manipulation of environment, facial expression
location: attached to bones (occasionally to skin i.e. the face)

Question 3

cardiac muscle

Answer 3

striated, short branching cells, generally uninucleate, cells join at intercalated discs (gap junctions)
functions: contracts to propel blood into circulatory system
location: walls of the heart

Question 4

smooth muscle

Answer 4

spindle cells with central nuclei, no striations
function: propels substances along internal passageways, involuntary control
location: walls of hollow organs

Question 5

Nervous Tissue

Answer 5

function: transmit electrical signals between cells
communication (sensory info/input ; motor movement/output)
location: brain, spinal chord, nerves

neurons - generate and conduct nerve impulses
neuroglia- support neurons