$$F_{out} = F_{in} \times \frac{d_{in}}{d_{out}}$$

Question 1

Which connective tissue layer surrounds individual muscle fibers within a skeletal muscle?

Accepted Answer

Endomysium

Question 2

A patient presents with difficulty performing fine motor movements and poor coordination. Which brain structure is most likely affected?

Accepted Answer

Cerebellum

Question 3

Which of the following best describes the function of the sarcolemma in skeletal muscle fibers?

Accepted Answer

Acts as the plasma membrane, conducting action potentials

Question 4

A muscle that acts as the primary mover in a given action is called the:

Accepted Answer

Agonist

Question 5

Which equation correctly represents the relationship between force, lever arm length, and mechanical advantage in a lever system?

Accepted Answer

$$F_{out} = F_{in} 	imes \frac{d_{in}}{d_{out}}$$

Question 6

Which neurotransmitter is primarily involved in voluntary muscle contraction at the neuromuscular junction?

Accepted Answer

Acetylcholine

Question 7

A patient has damage to the Wernicke's area of the brain. Which symptom would most likely be observed?

Accepted Answer

Impaired language comprehension

Question 8

Which type of neuron carries impulses away from the central nervous system to effectors such as muscles or glands?

Accepted Answer

Motor neuron

Question 9

Which of the following best describes the role of the primary motor cortex?

Accepted Answer

Initiates voluntary movements by sending signals to skeletal muscles

Question 10

Which structure in the spinal cord contains cerebrospinal fluid and is surrounded by gray matter?

Accepted Answer

Central canal

Question 11

A patient is unable to remember new facts but can recall events from childhood. Which type of memory is most likely impaired?

Accepted Answer

Short-term memory

Question 12

Which glial cell is responsible for producing myelin in the central nervous system?

Accepted Answer

Oligodendrocyte

Question 13

Which of the following best describes the function of the meninges?

Accepted Answer

Protect the brain and spinal cord by providing structural support and a barrier against infection

Question 14

Which equation represents the Nernst equation for calculating the equilibrium potential of an ion across a membrane?

Accepted Answer

$$E = \frac{RT}{zF} \ln \left( \frac{[ion]_{out}}{[ion]_{in}} \right)$$

Question 15

Which muscle is responsible for flexing the forearm at the elbow joint?

Accepted Answer

Biceps brachii

Question 16

Which of the following is a function of cerebrospinal fluid (CSF)?

Accepted Answer

Provides nutrients and removes waste from the brain and spinal cord

Question 17

Which part of the neuron is responsible for receiving incoming signals from other neurons?

Accepted Answer

Dendrite

Question 18

Which lobe of the brain is primarily responsible for processing visual information?

Accepted Answer

Occipital lobe

Question 19

A patient has lost the ability to recognize faces but can still understand spoken language. Which hemisphere and function are most likely affected?

Accepted Answer

Right hemisphere, facial recognition

Question 20

Which of the following best describes the difference between white matter and gray matter in the spinal cord?

Accepted Answer

Gray matter contains neuron cell bodies; white matter contains myelinated axons

Muscular and Nervous Systems: Structured Study Guide for Anatomy & Physiology

Study Guide - Practice Questions