Download HESI A2 SCRIPT 2026 FULL SOLVED CONTENT and more Exams Biology in PDF only on Docsity!
HESI A2 SCRIPT 2026 FULL SOLVED
CONTENT
◉The body, at all times, attempts to maintain homeostasis. The best definition of homeostasis is: a) a process that maintains the stability of the human body's internal environment in response to changes in internal and external conditions b) a function via which the body breaks down glucose to use as energy c)a process that maintains the immune system's defenses d) a process in which the body resists change to genetic structure. Answer: a) a process that maintains the stability of the human body's internal environment in response to changes in internal and external conditions ◉The endocrine system of the body is responsible for: a) defense through the use of antibodies b) communication through the use of hormones c) metabolism through the use of enzymes d) blood flow through the use of the heart muscle. Answer: b) communication through the use of hormones
◉Anatomical position shows the body in a(n) ________ position. a) lateral b) superior c) anterior d) posterior. Answer: c) anterior ◉Vitamin K is created in the: a) liver b) lungs c) intestinal tract d) pancreas. Answer: c) intestinal tract ◉The largest organ in the body is the ________. a) skin b) GI tract c) femur d) stomach. Answer: a) skin ◉A medical scientists wants to study the parenchyma of the kidney. This scientist would correctly be known, most specifically, as a: a) biologist b) doctor
Keratin is a family of fibrous structural proteins. Keratin is the key structural component of hair, nails, and the outer layer of human skin ◉What is the relationship between sarcomeres and muscle cells? a) sarcomeres are muscle cells b) sarcomeres contain muscle cells c) muscle cells contain myofibrils, which in turn are made up of sarcomeres d) muscle cells contain sarcomeres, which in turn are made up of myofibrils. Answer: c) muscle cells contain myofibrils, which in turn are made up of sarcomeres ◉A person who has torn their vastus lateralis muscle will need which of the following? a) an arm sling b) a cane or crutches c) insulin d) a neck brace. Answer: b) a cane or crutches The vastus lateralis muscle is a voluntary muscle in the legs. It is part of the quadriceps. ◉Muscles produce contraction due to the sliding of:
a) filaments b) sarcomeres c) flexors d) neutrons. Answer: a) filaments During muscle contraction, filaments slide together by using energy supplied by ATP. ◉The medulla oblongata has what primary responsibility? a) balance b) intellect c) vital functions d) sensory input. Answer: c) vital functions The medulla oblongata is responsible for basic vital functions, including respiration and heart rate. ◉Which of the following is true about simple reflexes? a) they travel through the entire body b) they travel only through the spinal cord c) they travel only through the brain
The gallbladder's function is to store bile, but the GI tract is more than capable of producing bile to digest fat without it. ◉Which of the following is NOT a role of cortisol? a) reducing inflammation b) raising the blood sugar level c) inhibiting the release of histamine d) controlling motor impulses. Answer: d) controlling motor impulses ◉How many pairs of spinal nerves are known to exit the spinal cord?. Answer: - 31 ◉The spinal cord reaches from the base of the skull to the first or second lumbar vertebra. The base of the skull is also known as: a) foremen magnum b) filaments c) cerebellum d) corpus callosum. Answer: a) foremen magnum ◉Cyclic adenosine monophosphate is a substance that performs which of the following? a) acts as part of the cell membrane
b) acts as energy for the cell c) acts as a secondary messenger d) acts as a hormone. Answer: c) acts as a secondary messenger (cyclic AMP) ◉The neuron is composed of a/n ________, which transmits signals toward the cell body, and a/n ________, which transmits signals away from the cell body.. Answer: - dendrite, axon ◉The pectoralis major muscle is located in which general area?. Answer: - the chest ◉The soleus muscle is located in which general area?. Answer: - the legs ◉Which of the following is responsible for differentiation, or specialization, of cells? a) platelets b) hormones c) neurons d) brain cells. Answer: b) hormones
◉Moving the arm toward the body would be described as a ________ movement, rather than a _________ movement.. Answer: - proximal, distal ◉The orthopedic surgeon informs you that you have broken the end of your femur. What is she describing?. Answer: - epiphysis The epiphysis is on each end of long bones, like the femur. ◉Which of the following is true of the axial skeleton? a) the facial bones include four nasal bones b) the mandible and maxilla are the only moveable bones of the skull c) ossicles are a part of the jaw bone d) the axial skeleton consists of a total of 28 bones in the skull. Answer: d) the axial skeleton consists of a total of 28 bones in the skull Ossicles are part of the ear, the mandible is the only moveable bone of the skull, and there are only two nasal bones. ◉A patient of yours is diagnosed with emphysema. In emphysema, the alveoli have trouble exchanging gases between the atmosphere
and the blood. It would be true to say that this patient has difficulty with what type of respiration?. Answer: - external External respiration is the exchange of gases by the alveoli between the atmosphere and the blood. ◉Deflections of the EKG represent which of the following? a) the contraction of the heat b) the relaxation of the heat c) the electrical activity that precedes contraction and relaxation d) they physical movement that precedes contraction and relaxation. Answer: c) the electrical activity that precedes contraction and relaxation ◉Follicle-stimulating hormone, thyroid-stimulating hormone, and luteinizing hormone are what type of hormones?. Answer: - tropic Tropic hormones act on other endocrine glands. ◉What is the purpose of the mastication of food?. Answer: - to increase its surface area Increasing the food's surface area promotes easier digestion by letting enzymes get to every portion of it.
◉What structure is responsible for making enzymes that detoxify substances we ingest?. Answer: liver ◉Which hormone helps stimulate the thickening of the endometrium during menstruation?. Answer: progesterone ◉Which of the following is not a part of the axial skeleton? a. vertebral column b. skull c. thoracic cage d. upper limbs. Answer: d. upper limbs ◉Major event of muscle contraction?. Answer: stimulation occurs when acetylcholine is released from the end of a motor neuron ◉A ventral wound would be found. Answer: in the abdomen ◉Which of the following would be considered nonrespiratory air movements? a. inspiration b. expiration c. inspiratory reserve volume d. yawning. Answer: d. yawning
◉The pancreas secretes hormones that. Answer: regulate glucose in the blood ◉Thin fingerlike projections that line part of the duodenum and all of the jejunum and ileum are called. Answer: villi ◉How many bones are in the cervical vertebrae?. Answer: 7 ◉How many bones are in the thoracic vertebrae?. Answer: 12 ◉How many bones are in the lumbar vertebrae?. Answer: 5 ◉The latissimus dorsi are found in the. Answer: shoulders ◉Striated muscles attach to. Answer: bones ◉When air enters the bronchi, it travels to the. Answer: bronchioles ◉Bones are classified according to. Answer: their shape (tissue type: compact or spongy) (shape: long, short, flat, or irregular)
