Practice Science TEAS Test

Correct Answer: B

Rationale: The correct answer is B: Smooth muscles. Smooth muscles are found in the walls of hollow organs like the stomach, intestines, and blood vessels. They are involuntary muscles responsible for the contraction and relaxation of these organs to facilitate processes like digestion and blood flow. Cardiac muscles (choice A) are found in the heart, skeletal muscles (choice C) are attached to bones for movement, and voluntary muscles (choice D) refer to muscles under conscious control, which can be either skeletal or cardiac but not typically found in the walls of hollow organs.

Correct Answer: B

Rationale: The correct answer is B: Cerebrum. The cerebrum is responsible for voluntary muscle movements as it houses the motor cortex, which controls voluntary movements. The medulla oblongata (A) controls involuntary functions like breathing and heart rate. The hypothalamus (C) regulates body temperature, hunger, and thirst. The thalamus (D) serves as a relay station for sensory information. Therefore, the cerebrum is the correct choice for voluntary muscle movements.

Correct Answer: B

Rationale: Step 1: Identify the atomic number of the element based on the electron configuration (1s2 2s2 2p6 3s2) which corresponds to oxygen (O) with atomic number 8. Step 2: Determine the number of protons in the nucleus by looking at the mass number which is 14 for this atom. Step 3: Subtract the mass number from the atomic number to find the number of neutrons (14 - 8 = 6). Step 4: Protons + neutrons = mass number, so the number of protons is equal to the atomic number, which is 8. Therefore, choice B is correct. Summary: A: 14 - Incorrect, this would be the total mass number, not the number of protons. B: 6 - Correct, determined by the atomic number of the element. C: 8 - Incorrect, this is the number of protons in oxygen, not the atom described

Correct Answer: C

Rationale: The correct answer is C: Sudoriferous. Sudoriferous glands are commonly known as sweat glands. These glands are responsible for producing sweat, which helps regulate body temperature. "Ceruminous" glands produce earwax, "Sebaceous" glands produce oil, and "Integumentary" refers to the skin as a whole, not specifically to sweat glands. Therefore, the correct choice is C.

Correct Answer: B

Rationale: The correct answer is B: Fibrous joint. Fibrous joints are immovable joints that connect bones with dense fibrous connective tissue. In the skull, the bones are joined by fibrous sutures, which provide stability and protect the brain. Hinge joints (A) allow movement in one direction, not present in the skull. Ball-and-socket joints (C) allow for a wide range of motion, not fitting the immovable nature of skull joints. Pivot joints (D) allow rotation, which is not a characteristic of skull joints. Therefore, the fibrous joint is the correct type of joint that connects the bones of the skull.