Unit 2 Topic 1 - Homeostasis Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

RECALL that homeostasis involves a stimulus-response model in which change in the condition of the external or internal environment is detected and appropriate responses occur via negative feedback (2.1.1)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

RECOGNISE that sensory receptors (chemo, thermos, mechano, photo, noci)
detect stimuli and can be classified by the type of stimulus (2.1.2)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

RECALL that effectors are either muscles (which contract in response to neural
stimuli) or glands (which produce secretions)
(2.1.3)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

INTERPRET feedback control diagrams for either nervous or hormonal systems (i.e. recognise stimulus, receptors, control centre, effector and communication pathways)
(2.1.4)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

UNDERSTAND that metabolism describes all of the chemical reactions involved in sustaining life and is either catabolic or anabolic (2.1.5)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

EXPLAIN why changes in metabolic activity alter the optimum conditions for
catalytic activity of enzymes (with reference to tolerance limits).
(2.1.6)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

IDENTIFY cells that transport nerve impulses from sensory receptors to neurons to effectors (2.1.7)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

DISCRIMINATE between a sensory neurone and a motor neurone (consider
dendrites, soma, body, axon, myelin sheath, nodes of Ranvier, axon terminal
and synapse)
(2.1.8)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

EXPLAIN the process of the passage of a nerve impulse in terms of transmission
of an action potential (conduction within neuron) and synaptic transmission
(communication between neurones). Refer to neurotransmitters, receptors,
synaptic cleft, vesicles, postsynaptic and presynaptic neurones and signal
transduction (2.1.9)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

RECALL that hormones are chemical messengers (produced mostly in endocrine glands) that relay messages to cells displaying specific receptors for each hormone via the circulatory or lymphatic system (2.1.10)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

RECOGNISE how a cell’s sensitivity to a specific hormone is directly related to the number of receptors it displays for that hormone (an increase in receptors =
upregulation, a decrease = downregulation)
(2.1.11)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

DESCRIBE how receptor binding activates a signal transduction mechanism and alters cellular activity (results in an increase or decrease in normal processes).
(2.1.12)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly