AnswersBiology - SC3209 ICThe Endocrine and Exocrine Systems

The Endocrine and Exocrine Systems — Unit test Answers

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21
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Which structure is at work when the body deals with reflex actions?

A
the heart
B
the brain stem
C
the vertebral column
D
the spinal cord
22
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Examine the words.impulse, presynaptic cell, neurotransmitters, receptors, postsynaptic cellWhat idea can be described using all the words listed?

A
the difference between the somatic and autonomic nervous systems
B
the transfer of information from one neuron to another
C
the difference between the central and peripheral nervous systems
D
the flow of information within a neuron
23

Jasmine is a healthy girl who is playing outside. Her internal body temperature rises to 100.4°F (38°C).How does her body most likely respond to help her return to homeostasis?

A
by shivering
B
by sweating
C
by producing goosebumps
D
by making hair stand up
24

Which statement best describes hormones?

A
Hormones are only made of peptides.
B
Hormones travel attached to white blood cells.
C
Hormones travel through the bloodstream.
D
Hormones are secreted through ducts.
25

Which best describes carbon dioxide’s path out of the body?

A
nose → pharynx → larynx → trachea → bronchus → alveoli
B
alveoli → trachea → bronchus → larynx → pharynx → nose
C
alveoli → bronchus → trachea → larynx → pharynx → nose
D
nose → larynx → pharynx → trachea → bronchus → alveoli
26

The picture represents a protein in the stomach being broken down into individual amino acids.

Question illustration
A
villi
B
enzymes
C
saliva
D
fat
27

Which part of the autonomic system is most likely to be dominant while someone is napping after lunch?

A
the peripheral nervous system
B
the sympathetic nervous system
C
the somatic nervous system
D
the parasympathetic nervous system
28

Sound can be heard when air passes over a respiratory structure that is located between the pharynx and the trachea.Which structure is responsible for the voice?

A
the nose
B
the larynx
C
the lung
D
the alveoli
29

Which structures are parts of the central nervous system? Select all that apply.the brainthe heartthe spinal cordthe sensory neuronsthe bonesthe muscles

A
the brain
B
the heart
C
the spinal cord
D
the sensory neurons
E
the bones
F
the muscles
30

Neurons and neuroglia work together to form nervous tissue, which is part of the nervous system. Which describes neurons and neuroglia?

A
They are specialized organs that form an organ system.
B
They are organs that form tissue.
C
They are specialized tissues that form an organ system.
D
They are cells that form tissue.
31

Veins take blood back to the heart. Which gas would be most abundant in a vein that takes blood from muscle cells in the arm back to the heart?

A
carbon dioxide
B
oxygen
C
nitrogen
D
hydrogen
32

Lewis is exercising and his muscles need oxygen. Which best describes how systems interact to bring his body into homeostasis?

A
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the muscular system.
B
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the muscular system.
C
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the skeletal system.
D
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the skeletal system.
33

Which of the following describes a negative feedback loop?

A
When the heart rate is too high, the body sends hormones that continually increase the heart rate higher.
B
When a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones.
C
When blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows.
D
When a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.
34

Which best describes the testes?

A
They produce hormones and sperm.
B
They are the male copulatory organ.
C
They give sperm nourishment and motility.
D
They are the pouch-like skin that protects the scrotum.
35

Heather presented to her class a report about the pancreas. Which statement in Heather’s report was not accurate?

A
The pancreas has both endocrine and exocrine functions.
B
The pancreas regulates blood sugar concentration.
C
The pancreas triggers the development of secondary sex characteristics.
D
The pancreas helps digest fat, protein, and carbohydrates.
36

Which of the following describes the epididymis?

A
a tube that transports sperm to the urethra
B
a vesicle that produces fluid and gives sperm nourishment and motility
C
a gland that contributes fluid to semen
D
a tube that stores and develops sperm cells from the testes
37

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. By changing the amount of water in the blood, blood pressure can change. The excretory system can help to lower blood pressure.Which would most likely occur in the kidney?

A
More water would be transferred from the nephron.
B
Less water would be absorbed into the nephron.
C
The amount of water in the bladder would decrease.
D
The amount of water in the blood would increase.
38

Which is the temporary storage tank for urine?

A
bladder
B
stomach
C
kidney
D
urethra
39

Which blood component makes up 41% of the blood’s volume?

A
plasma
B
red blood cells
C
platelets
D
white blood cells
40

PeristalsisSalivationDigestionSecretion

A
Peristalsis
B
Salivation
C
Digestion
D
Secretion

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