Integration of
Body Systems
Body Systems
Cells, Tissues, Organs, and Organ Systems
What are the four levels of organization in an organism.
This helps prevent infection by lowering the pH of the skin.
What is sebum?
This process produces gametes with half the number of chromosomes?
What is meiosis?
A different version or variant of the same gene, located at the same spot (locus) on a chromosome, which controls a specific trait.
What is an allele?
A bundle of white fibers that connects the two hemispheres of the brain, providing coordination between the two.
What is the corpus callosum?
These structures are made up of two or more types of tissues.
What are organs?
This enzyme converts fibrinogen into fibrin in the blood clotting process.
One set of chromosomes.
Haploid
Observable physical or biochemical traits of an organism
What is phenotype?
This is the brain's largest region, responsible for high-level "executive functions" including decision-making, planning, reasoning, and problem-solving. It controls voluntary motor movements, speech production, and emotional regulation, playing a critical role in personality and impulse control.
What is the Frontal lobe?
This internal communication system uses hormones for slower, long-lasting communication.
What is the endocrine system?
This system provides a specific response and remembers past infections.
What is the adaptive immune system?
Crossing over and independent assortment are the two main processes that contribute toward...
Genetic Variation
Only expressed when two copies are present.
What is a recessive trait?
Part of the Endocrine System, this structure produces important hormones and is a sac-like area that attaches to the brain between the pons and the optic chiasm.
What is the pituitary gland?
This structure of the brain is a bundle of nerve fibers that connects the left and right hemispheres. When it is cut, the two sides of the brain function independently.
What is the corpus callosum?
These white blood cells produce antibodies.
What are lymphocytes?
At the start of the luteal phase, these levels rise promoting the thickening and maintenance of the endometrium.
What is progesterone?
Hides or overrides the expression of a recessive allele.
What is masking?
This structure produces hormones affecting modulation of wake/sleep patterns and seasonal fluctuations.
What is the pineal gland?
Nerve impulses are electrical signals that travel along neurons. They are caused by the movement of these ions two ions across the neuron's membrane.
Na⁺ and K⁺
Always ready to "help," these cells recognize antigens and activate B-cells.
What are Helper T-cells?
Rising to a peak towards the end of the follicular phase this hormone stimulates the repair and thickening of the endometrium after menstruation. At high levels, it stimulates the release of LH.
What is estrogen?
RR x rr
Rr, Rr, Rr, Rr
All heterozygous.
Ridges and grooves in the cerebral cortex that increase surface area.
Gyri and Sulci