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Worksheetsslot 2/4 : Homeostasis
Total questions: 20
Worksheet time: 11mins
Which body system controls the body to maintain homeostasis?
excretory
nervous
circulatory
skeletal
Which of the following is not an important function of homeostasis in man ?
To regulate the osmotic equilibrium in the blood stream.
To regulate the excretion of waste products from the body.
To regulate gaseous exchange in the respiratory system.
To regulate body temperature.
An individual was diagnosed by a doctor to have excess glucose in his blood.
What treatment should be given to this individual ?
Give insulin injection
Give thyroxine injection
Give oxytocin injection
Give glucagon injection
Diagram shows part of the nervous system, including a reflex arc.
It has been cut at X. The finger is pricked by a thumbtack, as shown.
What are the effects of the prick?
Pain felt - NO, Arm moved - NO
Pain felt - NO, Arm moved - YES
Pain felt - YES, Arm moved - NO
Pain felt - YES, Arm moved - YES
Diagram shows the pathway involved in detecting and responding to changes in the internal environment.
What are represented by X and Y?
X - Effector, Y - Receptor
X - Receptor, Y - Effector
X - Afferent pathway, Y - Efferent pathway
X - Efferent pathway, Y - Afferent pathway
Diagram shows the transmission of the nerve impulse through a synapse.
Which of the following might be substance X?
Adrenaline
Sodium ions
Acetylcholine
Potassium ions
The figure shows the pathway of the nervous impulse in the reflex are for the knee jerk test in an individual.
Which statement is true about the reflex are in the individual?
Y carries impulses to Z
Y causes the knee jerk reflex
X carries impulses from the spinal cord to Y
X receives impulses from W and carries it to Y
The figure shows the negative feedback mechanism during the regulation of blood osmotic pressure.
How do the pituitary and adrenal glands respond?
Pituitary Gland - secrete more ADH, Adrenal Gland - secrete more Aldosteron
Pituitary Gland - secrete less ADH, Adrenal Gland - secrete less Aldosteron
Pituitary Gland - secrete more ADH, Adrenal Gland - secrete less Aldosteron
Pituitary Gland - secrete less ADH, Adrenal Gland - secrete more Aldosteron
The diagram shows three types of nerve cells P, Q and R.
Which of the following is the correct sequence of impulses transfer?
P --> Q --> R
P --> R --> Q
R --> P --> Q
R --> Q --> P
The diagram shows the mechanism of temperature regulation by the nervous system.
The control mechanism is described as
Reflex arc
Impulse transfer
Negative feedback
Positive feedback
Diagram shows the structure of human brain.
What is X?
Cerebrum
Cerebellum
Spinal cord
Medula oblongata
Organ X is malfunction.
What is the effect of this malfunction to his health?
Rate of physical development decreases
Blood sugar level increases
Blood osmotic pressure decreases
Metabolic rate increases
Which of the following is a characteristic of a reflex action?
Response is controlled by hormones
Response is fast
Response is initiated under the control of the brain
Nerve impulse takes a longer path
The graph shows the effect of different concentrations of auxin on the growth responses of shoots and roots.
Which of the following statements explains the graph?
Concentration of auxin does not effect the growth of shoots and roots
Only a high concentration of auxin stimulates the growth of shoots and roots
A low concentration of auxin stimulates the growth of shoots whereas a high concentration of auxin stimulates the growth of roots.
A low concentration of auxin stimulates the growth of roots whereas a high concentration of auxin stimulates the growth of shoots.
