Respiratory System
This muscle is primarily responsible for increasing thoracic volume during quiet breathing.
What is the diaphragm?
This division controls voluntary skeletal muscle movement.
What is the somatic nervous system?
This hormone lowers blood glucose.
What is insulin?
This type of cell directly kills infected body cells.
What is a cytotoxic T-cell?
Protein digestion begins in this organ.
What is the stomach?
The functional unit of the kidney.
What is the nephron?
Fertilization most commonly occurs here.
What is the uterine tube?
These two systems regulate blood pH by removing CO₂ and hydrogen ions.
What are the respiratory and urinary systems?
These structures allow efficient gas exchange because they are thin and surrounded by capillaries.
What are alveoli?
Myelin increases nerve impulse speed by allowing the impulse to jump between these gaps.
What are Nodes of Ranvier?
Steroid hormones differ from peptide hormones because they can do this.
What is pass through the cell membrane and act inside the cell?
B-cells eliminate pathogens by producing these.
What are antibodies?
Bile assists digestion by doing this to fats.
What is emulsifying them?
Filtration occurs in this structure.
What is Bowman’s capsule (or glomerulus)?
This structure forms from the ovulated follicle and secretes progesterone.
What is corpus luteum?
During stress, these two systems work together to increase heart rate.
What are the nervous and endocrine systems?
An increase in carbon dioxide lowers blood ______ and stimulates ______ in the medulla.
What is pH; chemoreceptors?
This brain structure links the nervous and endocrine systems.
What is the hypothalamus?
Negative feedback causes hormone release to do this once balance is restored.
What is slow down or stop?
This type of immunity produces memory cells.
Most nutrient absorption occurs in this organ.
What is the small intestine?
ADH acts on this part of the nephron to conserve water.
What is the collecting duct?
The acrosome helps sperm do this.
What is penetrate the egg?
This hormone increases during dehydration to conserve water.
What is ADH (antidiuretic hormone)?
Residual volume prevents this from happening to the lungs.
What is lung collapse?
Reflexes are processed here before signals reach the brain.
What is the spinal cord?
These two hormones work together to maintain blood glucose levels.
What is insulin and glucagon?
This type of cell allows the immune system to respond faster the second time.
What are memory cells?
This organ is both endocrine and digestive.
What is the pancreas?
These are the three steps of urine formation.
What are filtration, reabsorption, and secretion?
This hormone maintains the uterine lining after ovulation.
What is progesterone?
This immune response includes redness, heat, swelling, and pain.
What is inflammation?
When carbon dioxide levels rise, this part of the brain increases breathing rate.
What is the medulla (or brainstem respiratory center)?
This division increases heart rate and decreases digestion.
What is the sympathetic nervous system?
Damage to this structure could disrupt temperature, hunger, and hormone regulation.
What is the hypothalamus?
This type of T-cell coordinates immune responses by releasing signaling chemicals.
What are helper T-cells?
These structures increase surface area in the small intestine.
What are villi and microvilli?
These mineral deposits can cause intense pain as they move through the ureter.
What are kidney stones?
This feedback loop occurs during childbirth.
What is positive feedback?
This mechanism maintains homeostasis by reducing hormone output once balance is achieved.
What is negative feedback?