the generation of electrical impuleses requires the presence of an ? membrane, which must contain ion channels

the movement of ions in and out of a neuron as a result of electrical activity

which of the following activities would indicisyw that a novel object may be a living organism

the following are typical phsyiologixal potentials except

transport processes can be categorised by each of the following mechanisms except

all of the following are principal components of cells except

which of the following distinguishes an axon from a dendrite

which of the following is not a principle characteristic of osmosis

which term describes the regulatory mechanism which results from the activities of the nervous system or endocrine system that control or adjust the activities of many systems simultaneously

the potential difference across the cell membrane sets up a

which of the following is NOT a main speciality of physiology

what is the term of the process by which a nearly stable environment is maintained in the body, so that cellular and metabolic functions can proceed at a maximum efficiency

any shift from the resting potential towards o mV is called a

which of the following statements about the divisions of the efferent branch of the nervous system is correct

membrane proteins a variety of specialised functions including each of the following except

a feedback loop contains all of the following components except

if the cell membrane were freely permeable to a particular ion, but impermeable to all other ions, that ion would continue to leave the cell until the electrical gradient was as strong as the chemical gradient - this is called the

which type of cells employ electrical impulses

which of the following is not a key function of the plasma membrane in human cells

Physiology is primarily the study of

the sodium potassium pump

which of the following functions is dependent on the nervous system

because the ? concentration of sodium is relatively high, sodium ions tend to move into the cell

at rest, the cell membrane is much more permeable to potassium that sodium, this generates a potential difference of

what is the primary mechanism providing long term control maintaining constant internal conditions and systems

opposite charges ? each other

when passage across the selectively permeable cell membrane requires energy expenditure, usually in the form of ATP, is known as

the plasma membrane is a gatekeeper regulating the passage of substances into and out of the cell described by the ? model

a ? is a brief, stereotyped change in membrane potential in the positive direction during excitation of a neuron

which of the following is suitable for long-distance communication within the body

the fluid mosaic model implies

which of the following provides the best definition of a state of equilibrium

which of the following demonstrates a positive feedback loop, that is where the initial stimulus produces a response that exaggerates or enhanced the change in the orginixal conditions rather than opposing it

which of the following statements about homeostasis is consistent with the idea of a dynamic equilibrium

graded potentials are local changes in membrane potential that

the threshold of a neuron is determined by

which of the following is a recognised level of physiological organisation

which statement best describes the relationship between anatomy and physiology

which system provides protection from the environment and takes a part in temperature control

physiological processes include

potassium ions tend to move out of s cell through open potassium channels and create a ?

a membrane through which any substance can pass without difficulty is

a positively charged ion is called

if your body temperature drops, what type of mechanisms is responsible for returning it to normal

when there is a diffference between the number of positive and negative charges across a cell membrane this is commonly termed a ? difference

which of the following statements about major divisions of the nervous system is correct

the equilibrium potential for sodium is

which of the following is a principle ion involved in neural impulse generation?

which of the following systems does not interact with all the others

which of the following is not a basic mexhxnaism of cell to cell communications?

how does negative feedback maintain a stable internal environment

at equilibrium potential there is no net flow of ions because

communication and integration is essential to maintaining homeostasis, relying on ? signals

which type of membrane protein is bound to the inner or outer surface of the membrane and is relatively easily speedster from it

process of diffusion tend to ? a concentrate gradient

what cannot drive the passive movement of substances across the cell membrane

ion channels permit the movement of ions in and out of the cell and are principally regulated by

voltage hates ion channels can be in each of the following states except

membranes generate electrical impuleses through distribution of

which of the following is not a principal life process