The limbic system is a complex set of structures located on both sides of the thalamus, primarily involved in emotion, memory, and motivation. Key components include the hippocampus, amygdala, and hypothalamus. The striatum, however, is part of the basal ganglia, which is primarily involved in the regulation of movement, motor control, and reward processing, rather than being a core component of the limbic system's emotional circuitry.

The semicircular canals are three fluid-filled loops located in the inner ear that constitute part of the vestibular system. They detect rotational movements of the head. Motion sickness occurs when there is a sensory conflict between the visual system and the vestibular system (the semicircular canals), leading to disorientation and nausea as the brain struggles to reconcile the conflicting signals regarding body position.

Estrogen is the primary sex hormone in females that drives the development of secondary sexual characteristics during puberty, such as breast development and changes in body shape. Additionally, it plays a key role in the menstrual cycle by stimulating the thickening of the uterine lining (endometrium) to prepare for potential implantation of a fertilized egg.

The provided answer indicates oxytocin, though biologically, ripening follicles primarily secrete estrogen. Oxytocin is typically associated with uterine contractions and milk let-down. This discrepancy suggests a potential conflict between the source material and established endocrinology, requiring further verification of the source's context.

Anoxia is a pathological condition characterized by a total depletion of oxygen supply to an organ, most critically the brain. Because brain cells are highly sensitive to oxygen levels, even a brief period of anoxia can result in significant neurological impairment, cognitive deficits, or permanent brain damage. It is distinct from hypoxia, which refers to a partial reduction in oxygen levels.

Germ cells are the specialized biological cells that give rise to the gametes—sperm and ova—in sexually reproducing organisms. Unlike somatic cells, which make up the body's tissues and organs and contain a full set of chromosomes, germ cells undergo meiosis to produce haploid cells, ensuring that genetic material is passed on to the next generation during fertilization.

The occipital lobe is the primary visual processing center of the brain. It receives and interprets sensory information from the retinas. Damage to this specific region, often caused by a stroke or trauma, can result in various visual deficits, including partial or complete blindness, as the brain loses its ability to process the visual signals transmitted from the eyes.

A diffuse nervous system, or nerve net, consists of a decentralized network of neurons spread throughout the organism's body. This structure is typical of simple organisms like cnidarians (e.g., jellyfish and hydra), allowing them to respond to stimuli from any direction without the need for a complex, centralized brain or spinal cord.

Muscles and glands are collectively known as effectors. They are the structures that execute the commands sent by the nervous system. Muscles respond through contraction, while glands respond through secretion, both serving as the physical mechanisms through which the body acts upon its environment.

Hubel and Wiesel's seminal research demonstrated that cortical neurons are highly specialized. They found that neurons in the visual cortex respond to specific stimuli like edges, orientations, and movement, rather than simply responding to spots of light. The assertion that all cortical neurons respond best to spots of light is factually incorrect, as it ignores the hierarchical complexity of feature detection in the visual system.