Biological Stuff Flashcards
Cornea
tough transparent tissue
Pupil
opening in the centre of the iris, expand or constrict to regulate the amount of light entering
Iris
pigmented tissue that gives eye colour
Lens
disc-shaped structure, assists focus
Retina
transduces light into visual sensations
Rods
black, white and grey receptors, sensitive to light, function best in dim light
Cones
colour receptors concentrated in FOVEA, function best in bright illumination
Bipolar Cells & Ganglion Cells
BIPOLAR CELLS combine info from many receptors and produce graded potentials on GANGLION CELLS which integrate information from multiple BIPOLAR CELLS
Cerebrum
major structure of the forebrain
Thalamus
organises inputs
Hypothalamus
motivation, emotion, sexual behaviour, temperature regulation, eating, drinking, and aggression.
Limbic System
Hippocampus
Amygdala
LIMBIC SYSTEM coordinates behaviours to satisfy motivation, emotion, and reward/punishment.
- HIPPOCAMPUS: form and retrieve memories.
- AMYGDALA: emotional response patterns
Basal ganglia
structures involved in movement and ‘autonomic’ responses/judgements
Cerebral cortex
unmyelinated cells that form the outer layer. Constructs complex voluntary movements for activities. Allows symbolic thinking
Tectum
vision and hearing