ANSC 301 ACTUAL EXAM PAPER 2026
QUESTIONS AND SOLUTIONS GRADED A+
◉ Development
Answer: the growth difference of body parts
◉ What occurs during prenatal development
Answer: -the process of growth and development within the womb,
in which a single cell zygote becomes an embryo, fetus, and then a
baby
◉ What are the prenatal growth stages
Answer: ovum, embryonic, fetal
◉ what happens during the ovum period
Answer: fertilization
◉ what happens during the embryonic period
Answer: rapid cell division, cell determination, and differentiation
◉ what happens during the fetal period
,Answer: further development of tissues, final 75% of gestation
◉ What occurs during gastrulation
Answer: the formation of the three germ layers
◉ what are the three germ layers
Answer: endoderm, mesoderm, and ectoderm
◉ How do the germ layers form
Answer: From hensens node, the organizer of gastrulation
◉ What does the endoderm become
Answer: the GI tract, liver, pancreas, lungs, and bladder
◉ what does the mesoderm become
Answer: somites
◉ what does the ectoderm become
Answer: skin and hair, brain and spinal cord
◉ When does neurulation occur and what are the products
, Answer: 1-2 days after gastrulation, forms the notochord, neural
tube, and neural fold
◉ What is myogenesis
Answer: the formation of muscular tissue in embryonic
development
◉ What are the steps of myogenesis
Answer: 1) commitment/determination
2) migration if needed
3) proliferation
4) differentiation
5) fusion
6) maturation
◉ what are secondary myotubules
Answer: where the bulk of muscle comes from, can be manipulated
by maternal nutrition
◉ What is hyperplasia
Answer: growth through an increase in the number of cells (how
organs/fat/bones grow)
QUESTIONS AND SOLUTIONS GRADED A+
◉ Development
Answer: the growth difference of body parts
◉ What occurs during prenatal development
Answer: -the process of growth and development within the womb,
in which a single cell zygote becomes an embryo, fetus, and then a
baby
◉ What are the prenatal growth stages
Answer: ovum, embryonic, fetal
◉ what happens during the ovum period
Answer: fertilization
◉ what happens during the embryonic period
Answer: rapid cell division, cell determination, and differentiation
◉ what happens during the fetal period
,Answer: further development of tissues, final 75% of gestation
◉ What occurs during gastrulation
Answer: the formation of the three germ layers
◉ what are the three germ layers
Answer: endoderm, mesoderm, and ectoderm
◉ How do the germ layers form
Answer: From hensens node, the organizer of gastrulation
◉ What does the endoderm become
Answer: the GI tract, liver, pancreas, lungs, and bladder
◉ what does the mesoderm become
Answer: somites
◉ what does the ectoderm become
Answer: skin and hair, brain and spinal cord
◉ When does neurulation occur and what are the products
, Answer: 1-2 days after gastrulation, forms the notochord, neural
tube, and neural fold
◉ What is myogenesis
Answer: the formation of muscular tissue in embryonic
development
◉ What are the steps of myogenesis
Answer: 1) commitment/determination
2) migration if needed
3) proliferation
4) differentiation
5) fusion
6) maturation
◉ what are secondary myotubules
Answer: where the bulk of muscle comes from, can be manipulated
by maternal nutrition
◉ What is hyperplasia
Answer: growth through an increase in the number of cells (how
organs/fat/bones grow)
