Question

select the trimester in which each event begins to occur.
can hear
can detect light
fat accumulates under the skin
heart starts beating
firm grasp develops
cells specialize
bones develop
placenta develops
incorrect
nice try! remember organs form and some begin working in the first trimester.
try again
trimester 1
trimester 1
trimester 1
trimester 1
trimester 1
trimester 1
trimester 1
trimester 1
trimester 2
trimester 2
trimester 2
trimester 2
trimester 2
trimester 2
trimester 2
trimester 2
trimester 3
trimester 3
trimester 3
trimester 3
trimester 3
trimester 3
trimester 3
trimester 3

Explanation:

Each event is matched to the trimester when fetal development first initiates the change, based on human prenatal development milestones:

1. Can hear: Fetal auditory structures develop enough to detect sound in the second trimester.
2. Can detect light: Fetal visual pathways develop to sense light in the second trimester.
3. Fat accumulates under the skin: Significant subcutaneous fat buildup starts in the third trimester.
4. Heart starts beating: The heart begins contracting early in the first trimester.
5. Firm grasp develops: Refined motor skills like a firm grasp emerge in the third trimester.
6. Cells specialize: Cell differentiation (specialization) starts in the first trimester.
7. Bones develop: Ossification (bone development) begins in the first trimester.
8. Placenta develops: The placenta forms and matures in the first trimester.

Answer:

• Can hear → Trimester 2
• Can detect light → Trimester 2
• Fat accumulates under the skin → Trimester 3
• Heart starts beating → Trimester 1
• Firm grasp develops → Trimester 3
• Cells specialize → Trimester 1
• Bones develop → Trimester 1
• Placenta develops → Trimester 1