Anatomy & Physiology- Pure Basics Flashcards
What is anatomy?
How the body is
What is physiology?
What the body does
What does the cell membrane do?
Controls the passage of substances moving in & out the cell
What does the ribosome do?
Synthesises proteins from amino acids using an RNA template
What does the Golgi apparatus do?
Packages & stores synthesised proteins
What does SER do?
Synthesises lipids & steroid hormones
What does RER do?
Folds and packages proteins and sends them to the Golgi Apparatus
What is pinocytosis?
A process by which liquid droplets are ingested by living cells
What are neuroglian cells?
They are cells that provide developmental, physiological, and metabolic support for neurons.
What does cartilage do?
It absorbs shock and provides structural support
Why is a RBC concave?
To increase the surface area for oxygen
What shape is a cardiac cell and why?
It is striated (stretched) to allow contraction
What do kidney tubule cells do?
They control water & salt excretion
What are the 4 basic tissue types?
Connective, epithelial, muscle, & nervous
What are the 3 types of muscle tissue?
Skeletal, smooth & cardiac
What does epithelial tissue do?
Often line body cavities
What does connective tissue do?
Binds, supports and protects
What is apoptosis?
Cell suicide
What is necrosis?
Cell damage/disease
Which cells have the longest lifespan?
Muscle and nerve, closely followed by RBC
Which cell was the shortest lifespan?
Gut epithelium, closely followed by platelets
How does aging effects cells?
It slows down mitosis so cells that die aren’t always replaced. Apoptosis can also either stop (forming tumours), or increase ( causing diseases)
What must be kept constant to protect a cell?
Oxygen & Carbon dioxide levels, chemical constitution, temperature and osmotic pressure
What are baroreceptors?
They detect a pressure change in the artery walls
What is the general rule for too high or too low?
Hypo = too low
Hyper = too high
What is negative feedback?
The response of the body is to reverse the original stimulus
What is positive feedback?
The response of the body is to enhance the original stimulus