unsure questions Flashcards
draw a labelled diagram of a lymph capillary
check your book
what is the lining of the stomach specialised for
the mucosa, is specialised for the secretion of gastric juice by the gastric glands located in the narrow, tube-like structure called the gastric pits
what are gastric juice
it is a digestive juice containing hydrochloric acid, mucus and digestive enzymes
what is the function of bile salts
they act like a detergent and emulsify the fat, breaking it into tiny droplets.
how does absorption in the large intestine differ from the small intestine
The main difference between the small and large intestine is that the small intestine absorbs digested nutrients whereas the large intestine absorbs water from the indigestible residue.
the large intestine can only absorb water and water-soluble vitamins and minerals via osmosis. this is because the large intestine does not contain villi, therefore absorption occurs through a selectively permeable membrane, and only absorbs water and water-soluble vitamins and minerals. there is no digestive enzymes in the large intestine
draw a diagram of a villus
check
why is the small intestine fit for absorption
has a large surface area
it does this by the small intestine being very long - 6-7m
the inner lining, known as the mucosa, has folds that extend into the interior of the small intestine
the mucosa has small, finger-like projections called villi that extend from the folded surface.
the cells covering the outside of the villi have tiny microscopic projections from the external surfaces. these are microvilli
why can you only transfuse a person with their own blood type
Your immune system will produce antibodies against any blood antigens you don’t have in your own blood
draw a long bone
check
draw a synovial joint
check
what are the muscles function
move bones by contracting stabilise bone positions regulate organ volume movement of substances within the body (blood lymph, etc) create heart
what is the ageing in regard to bone
bone is living tissue.
a person’s bone mass continues to grow until about the age of 30 years old.
after this, It is gradual begins to deteriorate.
until they are Bones become more brittle and may break more easily
what is the difference between chemical and mechanical digestion
mechanical digestion is the physical breakdown of food particles.
while chemical digestion is breaking down large complex molecules into smaller simpler molecules
what is the cardiac cycle
The cardiac cycle is the sequence of events that occurs in one complete heart beat
what is coagulation mean
it means blood clotting or going from a liquid to a scab
