Biology 1407 Exam 3 (Tarleton State) Questions and
Answers
Question 1.
Bilateria
Correct Answer: bilateral symmetry
Question 2.
Centralization
Correct Answer: the presence of a central nervous system including a brain and
nerve cords
Question 3.
pressure and volume relationship
Correct Answer: -volume increase = pressure decrease -volume decrease =
pressure increase
Question 4.
Glucagon
Correct Answer: increases blood sugar
Question 5.
flat worms
Correct Answer: -simplest animals with bilateral symmetry -no body cavity
-many are parasitic -incomplete digestive tract
Question 6.
Monotremes
Correct Answer: Egg laying mammals
Question 7.
body plan
Correct Answer: a set of morphological and developmental traits
Question 8.
voltage-gated sodium channels
Correct Answer: carries the axon potential down the axon
Question 9.
somatic
Correct Answer: convey impulses from skin, skeletal, and joins to CNS
Question 10.
endocrine system
Correct Answer: Glands secrete hormones that regulate processes such as
Page 1
, growth, reproduction, and nutrient use (metabolism) by body cells.
Question 11.
Gastrulation
Correct Answer: the process in which a gastrula develops from a blastula by the
inward migration of cells
Question 12.
neurosecretory cells
Correct Answer: Neurons that secrete neurohormone rather than a
neurotransmitter.
Question 13.
Myosin
Correct Answer: thick filament
Question 14.
Glands
Correct Answer: large tissues or organs that secrete hormones
Question 15.
Cephalization
Correct Answer: the concentration of the nervous system at the head end
Question 16.
blood pressure
Correct Answer: the pressure that is exerted by the blood against the walls of
blood vessels so they can receive the proper amount of metabolic nutrients
Question 17.
epithelial tissue naming
Correct Answer: 1 layer= simple multiple layers= straified
Question 18.
cardiac muscle tissue
Correct Answer: involuntary pumping of the heart
Question 19.
Tendons
Correct Answer: Connect muscle to bone (ONLY contractile)
Question 20.
Insertions and origins
Correct Answer: most insertions utilize rope-like tendons and move the bone;
SOME origins
Page 2
Answers
Question 1.
Bilateria
Correct Answer: bilateral symmetry
Question 2.
Centralization
Correct Answer: the presence of a central nervous system including a brain and
nerve cords
Question 3.
pressure and volume relationship
Correct Answer: -volume increase = pressure decrease -volume decrease =
pressure increase
Question 4.
Glucagon
Correct Answer: increases blood sugar
Question 5.
flat worms
Correct Answer: -simplest animals with bilateral symmetry -no body cavity
-many are parasitic -incomplete digestive tract
Question 6.
Monotremes
Correct Answer: Egg laying mammals
Question 7.
body plan
Correct Answer: a set of morphological and developmental traits
Question 8.
voltage-gated sodium channels
Correct Answer: carries the axon potential down the axon
Question 9.
somatic
Correct Answer: convey impulses from skin, skeletal, and joins to CNS
Question 10.
endocrine system
Correct Answer: Glands secrete hormones that regulate processes such as
Page 1
, growth, reproduction, and nutrient use (metabolism) by body cells.
Question 11.
Gastrulation
Correct Answer: the process in which a gastrula develops from a blastula by the
inward migration of cells
Question 12.
neurosecretory cells
Correct Answer: Neurons that secrete neurohormone rather than a
neurotransmitter.
Question 13.
Myosin
Correct Answer: thick filament
Question 14.
Glands
Correct Answer: large tissues or organs that secrete hormones
Question 15.
Cephalization
Correct Answer: the concentration of the nervous system at the head end
Question 16.
blood pressure
Correct Answer: the pressure that is exerted by the blood against the walls of
blood vessels so they can receive the proper amount of metabolic nutrients
Question 17.
epithelial tissue naming
Correct Answer: 1 layer= simple multiple layers= straified
Question 18.
cardiac muscle tissue
Correct Answer: involuntary pumping of the heart
Question 19.
Tendons
Correct Answer: Connect muscle to bone (ONLY contractile)
Question 20.
Insertions and origins
Correct Answer: most insertions utilize rope-like tendons and move the bone;
SOME origins
Page 2
