Page 141 - Biology_Form_3

Biology for Secondary Schools

Conditioned reflex Type of reflex action where the response is
affected by past experience
Cones Light-sensitive cells in the retina that are
important for colour vision
FOR ONLINE READING ONLY
Convex Spectacle lens that converges light rays and
bring them to focus on the retina. It is used to
correct long sightedness
Coordination Linking together of the functions of different
organs so that they work at the time and rate
required by the body
Coordinator Organ that receives messages from receptors
and uses it to link activities in the body, i.e.
the brain and spinal cord

Cornea Transparent layer at the front of the eye
Cornified layer Outermost layer of the epidermis of the skin

Cortex Outer layer of an organ, such as the kidney,
human ovaries, adrenal gland, the thymus and
portion of the brain including cerebral cortex

Cortisol Stress hormone released by the adrenal glands
that helps regulate metabolism, immune
response, and blood pressure

Cranium Bone enclosing the brain
Cushing’s syndrome Condition caused by prolonged exposure to
high levels of cortisol, leading to weight gain,
high blood pressure, and a weakened immune
system
Cystitis Inflammation of the urinary bladder

Cytokinins Plant hormones that promote cell division and
shoot growth

Deamination Removal of an amino group from an amino
acid
Dendrite Short branched protoplasmic process from the
cell body of a neurone or from an axon

Depressant Drug that suppresses the part of the brain
responsible for sensing pain

134 Student’s Book - Form Three

BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 134 23/10/2025 11:52:49 KAMISHNA
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 134
23/10/2025 11:52:49

KAMISHNA