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Tissues, Organs, and Organ Systems
Respiration & Circulation
Nervous System
Reproduction
Human Development
100
A group of similar cell types that perform a common function.
What are tissues?
100
Top chambers of the heart.
What are atria?
100
Type of cell that carries messages within the nervous system.
What is a neuron?
100
Male gonads
What are testes?
100
This part of the sperm contains digestive enzymes that help the sperm penetrate the egg.
What is the acrosome?
200
Type of tissue that lines outer surfaces, organs, vessels, and body cavities.
What is epithelial tissue?
200
This blood vessel carries oxygenated blood from the heart to the systemic circuit.
What is the aorta?
200
This type of ion propagates the action potential along an axon.
What is the sodium ion?
200
Fertilization occurs in this part of the female reproductive tract.
What is the oviduct?
200
A series of rapid cell divisions during early development with little or no cell growth between mitotic divisions.
What is cleavage?
300
Type of tissue that binds organs or tissues to one another, provides support, and gives protection.
What is connective tissue?
300
Pacemaker of the heart.
What is the SA (sinoatrial) node?
300
Junction between two neurons or between a neuron and an effector cell?
What is a synapse?
300
Spermatogeneis occurs here (be specific).
What are the seminiferous tubules?
300
Length of post-fertilization gestation in humans.
What is 38 weeks?
400
Nonliving substance between cells that make up connective tissue.
What is matrix?
400
Caused by partial blockage of a coronary artery.
What is a heart attack?
400
Part of the braint that controls language, memory, voluntary movement, problem-solving, and decision making.
What is the cerebrum?
400
Cyclical drop in the level of this hormone causes monthly shedding of the uterine lining in females.
What is progesterone?
400
This embryonic ductal system gives rise to the epididymis, vas deferens, and urethra.
What is the Wolffian duct?
500
Skeletal muscle appears striated due to the presence of these two molecules.
What are actin and myosin?
500
Blood cells are made here.
What is the bone marrow?
500
This neurotransmitter is a target for therapeutic treatment in Alzheimer's disease.
What is acetylcholine?
500
This hormone made in the hypothalamus controls the production of luteinizing hormone and follicle-stimulating hormone by the pituitary gland.
What is gonadotropin-releasing hormone (GnRH)?
500
The brain and spinal cord are derived from this tissue layer.
What is the ectoderm?