animal tissues Flashcards
blood(4)
red blood cells
white blood cells
platelets
plasma
red blood cells (8)
oval shape, contains haemoglobin which become oxihaemoglobin with oxygen, red in colour. Smaller, formed in bone marrow, flexible, no nucleus, biconcave
white blood cells (6)
irregularly shaped, has a nucleus, used to protect body against infection and disease, formed in red marrow and lymph glands and spleen, has a nucleus, larger than red blood cells
platelets (5)
small, irregularly shaped discs, no nucleus, result from break up of larger cells, clot the blood
plasma (2)
liquid part of the blood, the transporter (urea, nutrients etc…) regulated temperature
bone (3)
made of calcium, phosphate and collagen
spongy bone (5)
light bone, inside of bony structure, has a system of bone platelets (trabeculae), openings filled with fatty deposits, blood vessels and other tissues forming bone marrow
compact bone (3)
dense bone
surface of boney structure
more compact
nervous system (5)
cells called neurons
axons transmit impulses away from cell body
dendrites transmit impulses to cell body
axon is enclosed by a schwann cell (produce myelin sheath)
a synapse is the point at which a nerve impulse is transmitted
motor neuron(5)
dendrite (cell body)
nucleus (in dendrite)
axon hillock (joins dendrite to axon)
Schwann cell (many create myelin sheath, cover exon)
terminal branches (connect to axon on other side)
muscles (2)
contract and relax, 2 groups - voluntary and involuntary.
smooth(3)
location - walls of blood vessels function - controls slow, involuntary movements. involved in peristalsis structure - elongates (spindle), single central nucleus, not striated, contains myosin and actin
cardiac(3)
location - heart function - cause beating of heart (involuntary) structure - rectangular fibers (branched), 1 or 2 centrally positions nuclei, striated, have intercalated discs
skeletal(3)
location - our bones and tendons function - responsible for voluntary movements structure - striated, nucleus towards edge of cell (space for many mitochondria)
cartilage (3)
made of inelastic collagen fibers and elastic fibers
there are no nerves or blood vessels in the matrix