SCI 205 Exam I Fall 2025

Which of the following is a characteristic of veins?

• Thick, muscular walls

• Carry blood away from the heart

• Contain valves to prevent backflow

• High blood pressure

Cardiac output is defined as:

• The amount of blood pumped by each ventricle per beat

• The amount of blood pumped by the heart per minute

• The pressure generated by ventricular contraction

• The volume of blood in the circulatory system

Tags

NGSS.HS-LS1-3

Which of the following is the correct pathway of air during inhalation?

• Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → alveoli

• Nasal cavity → larynx → pharynx → trachea → bronchioles → bronchi → alveoli

• Pharynx → nasal cavity → larynx → trachea → bronchi → bronchioles → alveoli

• Nasal cavity → pharynx → trachea → larynx → bronchi → bronchioles → alveoli

A person with type AB blood can receive a transfusion from:

• Type A only

• Type B only

• Types A and B only

• Types A, B, AB, and O

Inspiration occurs when:

• The diaphragm relaxes and moves upward

• The diaphragm contracts and moves downward

• The intercostal muscles relax

• The thoracic volume decreases

The left ventricle pumps blood to:

• The lungs

• The right atrium

• The systemic circulation

• The coronary circulation

Varicose veins most commonly occur in:

• The arms

• The neck

• The legs

• The abdomen

Cyanosis (bluish discoloration of skin) is caused by:

• Excess oxygen in the blood

• Reduced oxygen in the blood

• Excess carbon dioxide in the blood

• Reduced carbon dioxide in the blood

Tags

NGSS.HS-LS1-3

Which of the following is NOT a factor that affects blood pressure?

• Cardiac output

• Blood viscosity

• Blood volume

• Blood type

The false vocal cords:

• Produce sound

• Do not produce sound but help close the airway during swallowing

• Filter air

• Warm and humidify air